For the most part, most ride queue lines cannot accomodate a wheelchair - tight turns, narrow lanes, and stairs. This is usually why wheelchair guests and other handicapped individuals are sent to a special entrance (usually the exit). Most new ride have queue lines designed with fewer barriers so the entire party can stay together through most if not all of the pre-show.
Most of the local theme parks have (theoretically) a rule that if there are more than 6 (IIRC) in the party, the wheelchair guests and one other person may go to the special access area, and the rest of the party goes through through the regular queue line. I say theoretically, since a torqued-off guest will not hestitate to write-up a cast member/employee for ‘having a bad attitude’ if they will not let the whole combined party of the Stinkersnots and the Boogerettes (twelve in all) through all together just because little Dipwick is in a wheelchair (seen this).
Also, just because you are in a wheelchair does not mean you will get onto the ride any faster. I believe it is a state law (gonna check this at some time), but at the local theme parks, only 3 handicapped parties are allowed on a ride at any one time, for safety reasons, in case of emergency evacuation. The backdoor queue line wait can stretch for as long as 60 minutes (been there on this one - (former)Roommate had knee surgery and it took us 60 minutes to get onto Splash Mountain, and this was with no mechanical breakdown - the line was that long).
Two exceptions I must note:
I have seen written passes for backdoor access for persons who cannot tolerate standing in line - I do not know the exact medical criteria, but if I overheard the guest services attendant correctly, it was for a autistic child.
Other exception I see a lot at the local theme parks is for the “Give Kids the World” guests. These are kids suffering from life-threatening illnesses whose last wish is to visit Mickey and Shamu. Cast members/employees jump and immediately backdoor these kids (subject to the same 3 handicapped guests limit as above). Again, as with adults, as their situation is not always readily apparent, they wear a special large button with the GKTW logo and their name. Damn good cause, BTW.
Busch Gardens Tampa Bay has a policy that handicapped guests are allowed to ride twice in a row. Any more than that, and they must exit the ride and come back later (usually about an hour or so).
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Then again, there was the time (former)Roommate and I got stuck on the Congo River Rapids. The normal queue line splits into two docks, one of which is accessible in and out only by stairs. He’s in a wheelchair after knee surgery (healed but still using a cane, can’t do stairs, and no way in heck he’s walking the park so we have a wheelchair) so they load us at the handicapped side and put up the orange flag (signifying this raft has a ‘special needs’ party) and we get to ride twice. Cool, no problem.
Once around great, stay in the boat, ride again.
Approaching the docks, the water jets push us to dock two, the non-handicapped one. Oops.
Ride around again. By now, we are drenched. Approach the exit and the water jets go on. Guess which side we’re on?
One more time around. We are completely drenched. Yup, they’ll get us off the ride this time.
No such luck.
Sixth time around. We approach the exit. (former)Roommate grabs the orange flag (the kids you put on a kid’s bike) and is waving it to get the operator’s attention. Water jets go on. Success.
We went back later that afternoon for another spin (hey, it’s a fun ride), and the crew was very, very nice to us and made sure we were on the correct ramp after the second time.
Darn.
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