Paddy has been before but it was Jake's first time, and probably his first time on a beach of any kind, as you can tell here by his obvious lack of comprehension as to what one does on a beach. In the end, he decided to be guided by Paddy and just have fun.
As you can see, they are both so fit that it only took them about two hours to recover from the exertion!
Jake is definitely built for comfort, not for speed.
Is it too much to ask that they untangle themselves by retracing their steps?