we went to the opening of pikes on sunday and it was class.
very laidback atmosphere during the afternoon, lots of people doing sunday roast, then hanging around the pool. it does get a bit more of a party vibe when the sun goes down, but it's still always pretty laidback. this sunday might be a bit different with the hotflush artists coming in as well after nick warren.
I'd definitely recommend it, especially if you've never been to pikes before - it's easily one of my favourite venues on the island.