Yes, indeed it was. I really enjoyed it, thought it was very well laid out and I appreciate the ending. Compared to Superbad, Adventureland kind of trades out some of the humour for an actual love story. Not to say it's not hilarious, because it is, but it's a little more rom-com.
As Karado mentioned it came out to something crazy like Adventureland only netting in 10+ million whereas Superbad hit it's stride with 100+ million. The films were only a couple of years apart, kind of strange to see Superbad grow into a cult comedy, but Adventureland stay more behind the scenes.
I love the soundtrack too, it's kind of 80's pop, (there are some brilliant David Bowie usages in there though) but I have a weakness for 80's pop, so there's that to look forward to if you're as weird as I am. Also still have a huge crush on Margarita Levieva (Lisa P). She was thirty years old more or less when she was in Adventureland, I bet you wouldn't believe that. She also used to be a Soviet child gymnast, so of course it keeps getting better and better.