Waiver of Subrogation waives the right of recovery against the venue owner in regards to damages or injuries. You do not need to add this to a policy unless required by your venue. 

Primary and Non-Contributory wording states that the insured’s policy will act as the only policy to pay for a claim until this policy has reached the limit. If the claim reaches the limit on this policy, then the venue’s primary policy will kick in. You do not need to add this to a policy unless required by your venue.