I've been to several of them in New York and recommend them, even if, like me, you're not necessarily a foot person. I'm more of an upperbody tickler, but I enjoy these parties. The male/female ratios vary, but is usually pretty good (I guess) but I can't really put a number on it. I have posted several long reviews, after the February 23, March 23 and May 11 parties. You should be able to find them in the Discussion and/or Gathering sessions. If you can't let me know, and I'll be happy to find them.
At first, I wasn't comfortable tickling in front of so many people, but I gradually got more comfortable with it. The guys who attend, generally have foot fetishes, and it's been my experience that people with fetishes, tend to be open-minded to other people with fetishes, even if it's not the same fetish.
(Note: I'm not trying to debate whether tickling is a fetish or not, that subject's been beaten to death on other threads - I just use the term for expediency.)
There are other people there into tickling, and I know that Giant fan and Wall Street have also attended at least one of the parties in New York and have posted positive experiences.