It’s an iPhone, waterproof, nothing special with that. Also, if you had a girlfriend you’d understand that girls always want photos in the swimming pool, so having your phone with you is kind of a requirement.
And drinking something while you’re on a floating bed, nothing wrong that, just don’t be clumsy. Unless you were referring to the alcoholic beverage, which is also fine as I prepare my drinks not that strong.
You must be fun at parties.
Edit: meant to say it’s water resistant, not water proof. Still tho, a iPhone 16 Pro Max in a swimming pool, and some water drops on it won’t do any harm. Did it for years with my iPhone 14 Pro Max, never had any issues. Even took some underwater photos, so all good. Nothing to worry about.