You NEED to plan on attending the Post sessions or CORE as they call them. That is when the real "work" is done. The weekend is just a jumpstart.
My H and I attended our weekend at a location about 4 hours away from our home because it was the soonest date we could schedule. But because of the distance, we waited until the local chapter in our city was starting their Post sessions. It was a couple of months lag, but there was no way we would have driven for the other ones. You can also repeat any sessions you wish of the CORE program, too, which is nice.