Hi,
@Reef! ?
Great to hear you had a blast! Absolutely appreciate you looking before asking the same things -- something that can be quite rate in these parts!
Forum folks are friendly though, so if there's anything you're unsure of or hasn't been covered before, don't be afraid to ask
Seeing how you do for a few skirmishes is the best way - some folk rush into buying a bunch of kit right away, then find after a while either that airsoft isn't really for them, or that the kit they grabbed initially,
wasn't really what they ended up wanting to use.
I'd say
eye protection is probably the first and most important thing you need -- decent stuff (you don't want it to fail!), and a full-face mask for your son (a number of sites won't let u18's use less than full face pro). For you, I'd say some kind of
lower mask or other face pro is also worthwhile -- while you don't want to lose your sight, you also don't want to risk losing your teeth! It's personal preferences but
@Dan Robinson can let you know how "it'll never happen to me" can end ?
PPE aside, decent footwear helps - whether you fancy combat boots or even just hiking/walking boots, generally something a little more supportive will serve you well.
Pew-wise (if/when the time comes)... it's a bit of a trope for folk to rush in to get a sniper rifle, or decide a pistol will be all they need -- then later regret those choices. Plenty "what should my first gun be" etc. posts around
Thanks for a great first post, and welcome to AFUK!
~TW