I thought I'd read that people sometimes have trouble getting their GLON award certificate sent, and ours is coming from Scotland. Hopefully, that won't be a problem.
We had better luck booking an award stay in London too, but we still had some customer service problems with Hilton Honors. The first rep was very helpful, and told us that there were rooms available at several different properties. When we called back ten minutes later, the next rep told us there were NO rooms at any property. We told her there were plenty showing only moments before, but she didn't seem to care. Luckily, we had the name of the original rep, and he took care of things without incident.