We had our wedding at BP last December, and we used our cocktail hour in lieu of a rehearsal dinner, so we re-purposed it as a welcome cocktail hour. Our ceremony was on the rooftop sky terrace, and our reception was on the south terrace, so we wanted to do something different beforehand. So we did the welcome cocktail hour on the beach, and they actually set it up with some little tables and chairs, which was completely included in the price.
I included a picture below, so you can kind of see the set-up. To the far right of the picture, they brought in a bar for just our group, but they had a waitstaff that brought the drinks right down to us. It's hard to see, but I think there were four shorter tables with four chairs each, and then there were three or four taller cocktail tables too, and in the center of all of it was a large table with the cocktail food. I hope that helps!