When I went on the walkback in May, I only took one guest with me, but they weren't checking ACE membership cards or anything. If you happen to have two or three people with you, it probably wouldn't be a problem to take them along as long as there aren't a lot of other ACErs there that day. I can't guarantee they still do it this way, but I thought you might want to know. Of course, you do need a membership card for the discount.