I've been a "loyal" Delta flyer approximately forever, but the old reasons (free Sky Club access, Medallion preferred boarding and seating, and occasional upgrades) no longer apply. And yes, I've been on VMB long enough to know how to conduct a search; but between a time crunch and laziness, I have a few questions that hopefully you Southwest flyers can answer. I've heard there's no charge on SW for changing dates and flights (other than any price increases) and that it's easy to rebook if the price drops. Having no experience with SW, I'd like to know if it's really just that easy. Can changing or rebooking for a better price be done online? Is there any limit how many times you can make changes? And if a trip is cancelled, can the full ticket price be applied on future tickets for a year? (You're screwed trying to make any changes on Delta!) I just started "toying" with a late August trip, and the process will be greatly simplified if changes are easy to make. Thanks a bunch!