Pansy and OTA
Pansy wasn't only wearing a swimsuit. That wasn't really her bag at the beach. She had on her sandals, cut-offs, and a tank top. She didn't bring a towel, though she'd probably regret that later. Then again, she could just apparate home and grab one if she really wanted to.
She was standing off to the side of the festivities. Most of the people who'd purchased squirt guns were already using them, running around and dousing one another. A lot of the people playing were kids, and Pansy wasn't sure she wanted to run in with a bunch of children... she'd likely either run one over accidentally, or worse, get plowed over by one or more of them!
So she was waiting for more adults to come by to play with. Maybe Draco and Zuko would show soon. In any case, she was ready.