I logged into a hotel wifi one on a real account and it last alot of months. You should really stay away from hotel wifi because alot of people log into that wifi. If you have to then do it in one shot and record that ip so you remember it.
Well if you are bringing the same laptop, you have the same cookies so you could do it. I know I have. IP alone should not kill. I still agree that to be doubly safe and if you are NOT sure, then best to avoid. What's a few days going to do to you? Plan your auctions ahead.
Or - you try it out and teach us about what you have learned =)
I don't think hotel IP will kill your account, But !!!! as we all dont trust EB so stay under radar don't buy troubles for no reason but all the best on your vacation I LOVE HOTELS