The main Atlantic Region games do not require a full face mask, nor do they require fullseal goggles. Shooting glasses is technically all you need. Is it recommended? No. Most guys on my team just wear eye protection and a mouth guard. I should wear one too, I've lost teeth playing before...but I hate them
Personally, I dislike big chunky goggles, but I do like the full seal around the eye that regular classes couldn't provide. I got a pair of ESS advancer v12's and they're great for that reason. Full seal, minus the bulk.