I was a bit apprehensive by the "we'll confirm in 24 hours or longer" initial email, as we had only bought the tickets the day before our travels. But I needn't have worried. A few hours later the tickets were emailed over. When we arrived at the bus station from our plane, we had the best seats on the bus, which was completely sold out, so we wouldn't have been able to get on board without this service. They just made us buy a couple of mandatory "luggage tickets" for putting our bags in the hold. First-rate service!