At the sea if you drink too much and you fall down you land on soft sand, in the mountains you run the risk of falling off a cliff. And you are up on a mountain chances are you need to get down from said mountain, which in turn could become a problem if you've been drinking. If you manage to avoid falling off a cliff on your way you could still get completely lost and wind up getting eaten by a bear or have your skeleton found by boy scouts 10 years later. On the beach all you have to do is stumble away from the ocean and get a cab.