The bus service itself was great. I did run into one frustrating thing while trying to book tickets online - the times for the upcoming buses disappeared about two hours before the buses. If you just arrived at the airport and haven't heard of Aircoarch before, and the signs are saying you can book tickets online, you should figure you can get tickets for the next bus arriving at the airport terminal station. It didn't seem to be an issue of bus seats selling out, judging that there were still empty seats on the bus we ended up getting. Thankfully there was a person who showed up to purchase tickets from in person, if it wasn't for that soul we would have moved on to a different bus service.