I have thought of walking back to the VC or asking the bus driver to just let me off if they would and having my wife come back and pick me up after she is let off back in Orlando at the hotel if it comes to that. There has got to be a better system than what they use for all of this stuff.
I dont know how there would be any way for them to "force" you to ride the gator/dolphin buses out, I think you should be able to go with the people who had regular LTTs and get to the VC that way. It would just be up to you to keep from getting stranded at that point.
this... just... no. abandon this line of thinking. it leads nowhere you want to be.
they used to let the general public drive their vehicles onto the causeway, just like they used to let people play frisbee on certain lawns in washington, dc that now have big fences around them. now they not only don't let you bring laser pointers or nail clippers with knife blades onto the property, they search the buses with guard dogs while you're off riding the shuttle launch experience.
it's not nasa.org, it's nasa.gov. you're not just a guest on private property, you're in a secured government facility. you can no more walk back from the causeway or not go out with the same group you came in with than you can wander around an air force base, and you'd probably meet the same kinds of sanctions if you were to try.
look, i know this whole "you might not get a replacement LTT after a scrub" thing has people spooked. i've been there. scroll back through the other "Viewing" threads for previous launches, you'll see the same questions asked and answered every time.
what you have to remember is that LTTs are completely sold out. this means that every seat on every bus has already been spoken for. (this also means there won't be any empty seats on the buses heading back from the causeway to the KSCVC either.)
all of the kennedyspacecenter.com ticket holders get their tickets sent out in the mail weeks before a launch attempt. likewise, all of the gator and dolphin and florida bus drivers get an envelope full of LTTs and two day visitor center tickets for each of their customers when they picked up their bus that morning.
see, here's a thing that's really not intuitive at all:
they don't actually sell launch tickets at the KSCVC the day they go on sale. they might have in the past, but they sure don't any more. if a friend back home hadn't ordered my STS-131 LTT for me through the web site, i wouldn't have gotten one -- and i was actually at the KSCVC on february 11th to see the SDO launch. there were no launch tickets sold on-site that day -- and, yes, it's true, NASA's visitor center has no public wireless internet access. (see "secured government facility".) my only path to a launch ticket on site that day would have been via cell phone.
so if all of the launch tickets were never at the physical KSCVC box office booths to begin with, and they all sell out the day they go on sale, and they're all mailed out ahead of time, it wouldn't surprise me at all if the vouchers exchanged for replacement LTTs on site right after a scrub are simply swapped out for the very same LTTs that were handed over in the first place. there's no reason to print out additional tickets if they're being handed box loads of them that same night.
which means there very probably simply aren't any physical replacement tickets -- not at the causeway, not at the KSCVC -- to sell to someone who didn't get their ticket from kennedyspacecenter.com in the first place. as your original tickets came from the bus companies, it's to the bus companies your replacements would be sent.
[editing to add: the different kinds of bus tickets are also different colors. orange tickets are what get sold through kennedyspacecenter.com; purple tickets are what get handed out through gator; yellow tickets are VIP tickets for banana creek. not sure what brown and green go to (dolphin and florida tours?). so it's much simpler than just "to whom do these LTTs go to?" orange LTTs are collected on site; orange replacement tickets are what's exchanged for the vouchers. if you're a gator customer, your tickets and your replacement tickets are both purple -- a color the KSCVC box office probably doesn't ever traffic in at all.]
will there be the high attrition rates reported in the past, leaving them with plenty of extra tickets to sell the next day? probably not for 132 and 133 and 134. i've heard estimates as high as 25% not showing up for previous 24 hour scrubs and 75% for subsequent 48 hour scrubs. but, for an orbiter's last scheduled launch, up against a weekend like this? i'd not expect more than 15% of the people showing up on friday to recuse themselves from showing up on saturday, whatever the reason.
but there still might be extra tickets sold at the box office the next day, possibly that night. and you can grab a parking placard on your way back out to the causeway if you want the option of driving back to the KSCVC and inquiring at the door. it's a sure bet you'll simply have to take the bus back to orlando first, though. i can't imagine any circumstance where a tour bus driver would have the authority to drive into any kind of .gov facility with 30 tourists and drive out with 29.
the bottom line is that it's not in delaware north's best interests to keep people from being able to buy replacement tickets to the causeway. if it's physically possible to get boxes of new LTTs from NASA to the gator and dolphin and florida buses within 24 hours to make another launch attempt, that's surely what they're going to do. you'll probably know one way or another by the time the bus returns to the parking lot with your car; if not, call the 800 number for your tour line and check kennedyspacecenter.com and hope for the best.