They should be able to seat you, unless you are going at a very busy time of the year. If you want to be certain, when your ME bus pulls away from the airport or you are in your rental car, go on the app and check to see what availability they have for about 60-90 minutes from that point. If there are a lot of ADRs available, they should be able to seat you whenever you get there, if there are 1 or 2 ADRs available take one.