We have been traveling about twice a year for the last 10 years and have always avoided trips using multi-carriers. However, with the cost of flights out of our regional airport going through the ceiling, we may be forced to start seriously considering these type of trips. What do you do when you arrive at the airport and have to change carriers, when the two airlines have no "partner" arrangement, and the 2nd carrier is two terminals away? Any comments would be helpful.