Yes, jambo does this also. We walked over to Jambo one afternoon and noted the hula hooping contest going on.
Side note: from what I understand all the main resort pools around WDW do the pool party now. AKV is unique in that it has 2 main theme pools and they hold the party at both.
Yes, Jambo offers them as well and they go on all afternoon. We had a pool view studio and I was surprised at the participation (and how loud it was!). You'll definitely have a great time at either one of them.