I carry Russians & Germans, basic information counters, a pocket rulebook, a dice tower and my little box of dice/tweezer/common overlays etc.
I have never had ANY problem borrowing maps and counters for any scenario at ASLOK - it is just a great group of people who are always willing to help out.
On my last trip to ASLOK (4th trip), I mistakenly forgot all of my maps. I asked to borrow a couple of different maps from a very well known player. He asked me,
every time he saw me, if I still had his maps. Around dinner time of the second night, I entered the elevator, with a group of players of which this same person was one. He looked at me and said, "there is no room in my car". I told him "I have my own car and was not planning on going out to dinner with you anyways". I packed up my gear and left the next morning. This was the only time that anything like this happened.
I haven't been back since but only because i cannot get the vacation time off for that period.