Re: WHO'S HERE? Baymax is here, in Ben Solo's body. He's in long trunks and a tank, but he's in and out of the water, swimming and using Force-assisted jumps into the pool. It's very clear he's enjoying the hell out of himself.
Bucky is around, sticking close by Silver!Sam. He kind of wants to go swimming, but feels awkward about it.
Poe is nearby, flickering all around, serving drinks and passing out towels to anyone and everyone. He is delighted to be of service at such a gathering.