1. No more having to fill in those dratted arrival and departure forms. This was more painful because we went IAD-BKK-PEN-BKK-IAD which means 6 rounds of forms instead of the usual 4 rounds.
2. No more roaming charges. It sure would have been nice if we could have used our U.S. phones in Penang without incurring roaming.
3. Free Internet. I know - this has nothing to do with open borders.