As part of a trip, one wants to have some flexibility. Advanced dining reservations tend to eliminate that flexibility at times. During busy times of the year at WDW, which table services can you walk up to with minimal wait? (say less than 30 minutes).
Also, which table services could you say call a day ahead of time or a few hours ahead of time and still get a spot?
Which ones would it be a waste of time to try this?