Ditto the rec for dark clothes and kneepads. And you’ll see plenty of cammo. A hoody provides nice coverage of the neck/throat/head. Or a jacket with a collar that stays up. IME the shots that sting the most are to the neck and hands. So maybe a pair of thin/fingerless gloves if you have them. A couple of layers will be fine - you’ll build up a sweat soon enough!
IMO the shots don’t hurt much at all. You might get a bit of a bruise from a couple of shots, but nothing that will limit you the next day. IME, you are more likely to injure yourself, throwing your body around like a kid, diving for cover, etc. I have felt the residuals of such self-injuries far more than any hit.
When my son first got his gun, I had him shoot me square in my bare back from about 20 feet away, to see the maximum damage it would do. His gun was cranked up over 330. Stung like a good slap, and left a healthy discolored welt, but no significant pain. Very superficial. Most courses will limit your guns down under 270 or so. Indoors or in hot weather I play sleeveless and in shorts. But I can imagine lots has to do with your personal pain tolerance. Neither I notr anyone I played with ever came close to getting shot in the groin. I think slightly baggy/heavy pants would remove any real worry w/o needing a cup.
The other day I went out to this place with my 8th grade son and his 2 buddies.http://www.challengepark.com/paint_fields.asp What a riot! My son and his crew all got new guns/upgrades for x-mas. They are quite a team - my son is the general/sniper, his one buddy the commando, and the 3d a berserker. And all 3 of them are big into military history and strategy. It was such a rush to see all of these adult men lining up to take orders from these 3 14 year-olds, once the adults realized these 3 kids were kicking everyone else’s butts! And they let THIS old fart play with them! (Actually, I’m their designated wheelman!)
I suspect you will be impressed at the friendliness you will encounter. Basically, you have a bunch of boys and men (too few women - how YOU doin, Deadly?!) running around like nuts, playing army, cowboys and indians, cops and robbers, or whatever else you played when you were a kid. What a riot! I have a hard time imagining why ANYONE would not enjoy it. A couple of hotheads might get excited, but just avoid them and don’t let them take away from your fun. Most of the time, you are swapping war stories with all the other guys, whether on your team or the other.
Be prepared to get hit early in your first games. Especially if you get too aggressive. If you move too quickly, you’ll find you moved right into someone’s line of fire. It can be very hard to convince yourself to stay in a defensive position - especially when you don’t have any clear targets to shoot at. But little beats the rush of circling around someone’s defense, coming up on them unawares from their side or rear, and letting them have it!
And make sure you check back to tell us all about it.