Sweeney is NOT AN INTROVERT so he's kind of flying around all night but he gravitates back to Laura on a regular basis to interrupt her reading, take her food, feed her alcohol, and ruin the view of any menfolk looking her way. At some point he dumps his phone, rolling papers, and tobacco with her so that he can get in the water when he feels like it. Swim trunk pockets are cool but they can't do it all, you guys.
When he thinks she might be drunk enough he starts trying to talk up the wave pool.