well of course AIDA has a range of certification courses. At SaltFree we ask all divers to have a minimum of ** Freediver. Most of the pools over here require some kind of official training before you can rent space or practise freediving in them.
AIDA ** is the beginner level course for anyone who is already OK in the water. See if you can find an AIDA Instructor to teach you that - there is a list on
AIDA International
Presumably if you have a problem in the water, you'd expect someone to help rescue you/recover your body - so I don't think it's too out of order for them to ask you to have a certification