Planning a party in local village hall for DD's 5th bday. Have organised hire of bouncy castle plus soft play equipment, and professional face painter. Have just looked at terms of BC hire and they say "no face paint as may permanently stain the equipment". Is this usual? Does everyone just ignore this? (Have been to loads of kids' events with both BCs and FP.) Do they put it in just to cover themselves in case you really trash their equipment or are they absolutely expecting you to follow it?