Wow, you guys must have more trouble with AKC than I’ve ever had! Around here the trials don’t fill up terribly quickly - actually, I’m not sure that the last few trials I’ve run have even technically filled - they’re not hurting for entries, but you certainly don’t need to overnight them, either. I do know of one venue up in NJ (Dream Park) that fills in a hurry regularly, but that’s not the norm here. (Actually, in my experience, it’s the NADAC trials that you have to get your entries into tout suite! - one club even gives its own club members priority, so that kind of sucks if you’re not a member.)
AKC courses are a total mixed bag - I’ve had some beautiful flowing ones, and (this past weekend, actually) some tight, trappy ones. In my experience, the ones that I think are going to flow often don’t and the ones that I think are going to be really technical and tough end up running really smoothly.
I’ve also gotten to the point where I prefer the fewer runs per day in AKC - once again, in my experience, NADAC trials run all. day. long., which wears me out in the worst way - and I started feeling like, if I was that exhausted, how must my dogs feel? AKC trials locally run two rings, so chances are good that if things go smoothly (no huge course rebuilds, etc.) I may start early, but I stand a pretty good chance of getting home before dinner time, especially if I don’t stick around afterwards to socialize. NADAC only runs one ring, which is nice, because you know you won’t have any scheduling conflicts, but, oy - from first run to last made for a very long/late day.
As far as friendly - eh, it is what you make it - if you go out there with a good attitude and want to make friends, you will - if you don’t, you won’t. (And I think that goes for just about EVERYthing, not just agility).