As a side note - I'm the planner in our family, even when I'm not going on the trip. I typically leave myself as the primary so I can manage it (cancel or modify if needed), and I've never had an issue. I make sure my sister is one of the guests so that she can check in and handle things on site, but they've never cared whether or I was in attendance or not. The only potential issue would be the credit card guarantee (or prepay) - my family knows the drill, but if you're making them for someone, just make sure they know YOU will be charged if your card is on file and they don't show up.