While we're on the topic of toilets and grills, there's something I've puzzled about for a while; subs with air conditioning. Over the years I've seen a number of subs written up as having air conditioning, especially tourist subs. Surely this is only needed on the surface, if at all? I can't help think it might just be something the tour operators feel is mandatory in a brochure. Sort of like the hotels with impossible swimming pools built tight next to a roaring, stinky highway.Is there any "real" need for AC?- Alec