if a guest in your party won’t be boarding an attraction due to height limit or other reasons, the rider switch option means you don’t have to miss out! instead, you can wait with the non-rider(s) while the rest of your party enjoys the attraction. then, once they’re done, you can take your turn by going through the disney premier access entrance or alternative entrance (when the disney premier access entrance is not available).
(please note that rider switch may not save more queueing time for guests who holding a disney premier access for the attraction concerned)
most attractions offer the rider switch option to adults with non-riding youths, including: