This will be the third time delving into a megadungeon for my group. The first trip, where they dipped their toes into The Barrowmaze for a few sessions, went remarkably well. The second trip to a megadungeon was a foray into Dwimmermount. That went... less remarkably well. Tonight will be Rappan Athuk.
I'm not sure which entrance the party will choose, let alone learn about. We'll play that out tonight, when they get to their new "Base of Operations".
The players are psyched, and that's always a good thing ;)