[QUOTE=nizfizOn another note, what happens if an adult gets seriously injured at an airsoft field? He/she can sue too can't he?
Not a bad question. Let me answer it. An adult can sign a waiver, and is subject to contributory negligence, voluntary assumption of risk defenses and the standard of care issue favours the defendant in cases where adults are injured.
None of which applies to minors. The legal risk to having a minor on an airsoft field is orders of magnitude higher. Damage awards for serious injuries to minors are also usually much higher.