If you want to come as, or bring, a guest you MUST first clear it with the person running the game - yes, EVERY game. Teams are limited to no more than eight players per side, sixteen players total. There is almost always a waiting list for guest slots. If you just show up, you will most probably not get to play. Please don't mail a slot request before Wednesday, and don't ask for a slot further out than the next game (many times people have asked for a slot several weeks in advance, then completely forgotten about it). Check the weekly reminder, there may be special information about this week's game. You will get a note about your guest slot status (either you have a slot or you're on the waiting list). If you don't get the confirmation note by Thursday afternoon, your email may have been lost - try sending it again.
Our popularity ebbs and flows. We usually have better than six a side, sometimes it's down to five. However, we often go through long periods of time when we have more requests than we have open guest slots. To be fair to everyone wanting a guest slot, we take all guest slot requests received on Wednesday, and assign slots randomly. Any guest request received before or after Wednesday will be added to the waiting list after all of the Wednesday requests.