First of all, I would like to

both of you to disABILITIES!
You might both look at the
disABILITIES! FAQ which will answer many of your questions.
However, with the exception of a few lines at MK, all of the queues are "Mainstreamed", which means that a person in a wheelchair or
ECV does not bypass the line. The only problem which may be encountered is if the person cannot transfer, for which waiting for a specific ride vehicle might be necessary.
As a general rule, if there is need for a special entrance or special seating, it is normally restricted to the person in the chair and not more than five additional people. This is not to say that if the park is not crowded and you are polite to the CM that rules may not be bent.
Please feel free to ask additional questions as they come up.