Are you kidding your cats are rubbing there paws with glee! A free house all to themselves!
The get the convenince of a feeder for meal times but they dont actualy have to live with them!

Seriously what could be better! Us humans only mess up there sleeping patterns and play times anyway! (so my cats tell me) lol!

I reckon they will love it! Much better (like everyone says) than going to a strange place with strange people!

LOL you're right, didn't think of that. Perhaps they'll even have a whole bed to themselves too, instead of risking a large human rolling onto them. Let's hope they don't change the locks while OP is away!

Thanks for all your replies! They'll definately be staying at home then

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PS I noticed you said they're housecats. I hope they know their local neighbourhood, but if they've never been out, do tell your brother not to let them get out of the house, as otherwise they could get lost.