I would bring the kit lens, or maybe rent a 24-70 or something similar for the trip. I think that a 10-22 and the 50 1.8 is a great idea, but I think you will be disappointed and not able to get all the shots you want with just those two lenses. I've been using those two lenses for like 90% of my shots in the last 6 months because they provide great image quality, but the 50 is a little too long to be used say in a bar to take photos of friends, and I really think you will want some coverage in the 20-40mm range for walking around, etc. Just my 0.02.