Hi Daniel,
welcome to yet another fellow-european.
Don't think there is anything specific you can't buy in Playa (unless you are allergic to something). You find a lot about places to go on the board. If you look at the 'peep'-section you might find that peep-meets are planned while you are there. If you want to meet some nice and fun people I would strongly recommend to join at least one of them
Have a great vacation!
Andrea