UPDATE: Sorry, Pattaya Paintball Park is closed permanently. But don’t despair. If you want to go paintballing in Pattaya, open this page about cheap adventure activities in Pattaya and click on the link to Sanook Park.
There are three activities available at Pattaya Paintball Club, BB guns, football, and paintball; besides these activities, they also have a shop on site selling BB guns.

All the equipment is available for hire, including paintballs, BBs, and protective clothing. You should check their website for the latest prices, but here is a rough idea of what it will cost you. BB gun is 300 baht, and for additional BBs, the cost is 270 baht for 500. A paintball gun is 590 baht with 100 paintballs. There doesn’t seem to be any limit on the time; so long as you have the energy, you can play as long as you want.
You can get discounted admission to Paintball parks and many other top attractions and activities in Pattaya if you buy tour and entry tickets online.

You can arrive as a group, or you can go on your own. Once there are enough participants, they will be formed into two teams, and the battle will commence. The BB gun and paintball activities are basically the same, except the BB gun is cheaper, and being as you are not getting splatted with paint, it needs a certain amount of honesty for it to work.

The football pitch is available for rent by the hour and costs around 990 baht; that is for the pitch, not per person. It looks to be about half size, so good for even an 11 aside game.
Address: 84/92 Pattaya 3rd Rd, Soi 17, Moo 10, South Pattaya.
Telephone: Office 086-764-1777 or English : 080-050-3031.