Pretty awesome! Food carts were scattered around the park: churros (longest lines), frozen treats, popcorn, sodas/water. The water bottles ran out fairly quickly (not surprisingly). This year they allowed us to keep the beverage bottle caps but the prior year (DCA) they opened the beverage and kept the cap.
I don't recall which rides were opened/closed ... but had a blast both with rides, special Fantasmic show and Meet the Execs. We got to everything we wanted and left entirely satisfied.
Edited to add: We were allowed in a little early (before park closing) and were given wristbands. I think that most entering early were able to see the closing day fireworks if they wished.
EDITED a SECOND TIME: Here is a link to my write-up following last year's event:
#7 https://www.disboards.com/threads/moonlight-magic-at-disney-parks.3641206/#post-58483479