typically you will see paintball goggles required at paintball fields.
It's an insurance thing
At my indoor facility I require full seal goggles.. because we engage at 0 feet and employ grenades.. that spray bbs at weird angles.
At outdoor fields at games that I run.. any Ballistic eyewear is approved. It's your eyes.
all in all it comes down to the regulations in play at the venue
Informed consent provides some measure of protection against litigation.. but regulations in play must indicate a reasonable and appropriate caution on the part of the venue owner and Host.
CAPS Range Officer
Toronto Downtown Age Verifier
If the tongue could cut as the sword does, the dead would be infinite