Percy was staying as far away from the strippers as possible. He just didn't know how to deal with --er. Any of that. He didn't honestly know many people here -- he was more Audrey's friend than Merlin's, but he had come in a show of companionable solidarity.
But there were strippers to avoid. And Michael Jackson's Thriller to feel exasperated over.
All in all it was a fairly nice distraction from that fact that he was getting married in just three days' time.