F.S.
Hi Anatazia,
You know, Ive never been to Gymboree but we have been going to The Little Gym since my oldest once under 1 year old. (she is 2.5 now) and it is FANTASTIC!
You can check them out at http://www.thelittlegym.com/ as an alternative idea..
PS. You can schedule a try-out class online for free!