I think this episode has some very hilarious parts in it. I find Klink is slightly(.001%) smarter in the earlier episodes. He seems to be a lot more sly and skeeming than later in the series. I love how at the beginning of this episode the diversion to get Lebeau out of camp was Newkirk pretending to sleep walk......hilarious! A good thing is how the episode had more serious momments than normal...like how the leader of the escaping prisoners didn't like being brushed off by Hogan.
The end is funny from a quick remark from Hogan to Klink(who thinks he's a big man for finding the tunnel). Reservations Are Required is all around a good episode.