this is a wonderful idea to ride in night in EPCOT!
Depending on what park, time of season etc. this can be good or bad. We had a fun time at DHS Extra Magic Hours but Magic Kingdom Extra Magic Hours were crowded. Be sure to check out AK for Evening EMH!
a great plus for staying on property. alows you to go on rides with minimal wait, unless it is peak time, but still worth it. I recommend it :)