Is this an unreasonable assumption of risk for a wedding contract?

Here is the insurance policy as it is written in my wedding venue contract. Is it common to sign a hold harmless agreement? Is it common to be asked to name the venue as an additionally insured on my event insurance? It feels like we are being asked to provide insurance to cover the venue/staff if they make mistakes. Is that reasonable? Are they really not responsible if an accident happens due to their negligence? 26. Insurance: "Client" agrees to hold XXXX and all associated parties harmless for any loss, injury or bodily harm. "Client" understands that outside wedding and liability insurance including liquor liability, is required in the amount of one million dollars and will name XXXX as a named additionally insured on this policy. "Client" understands that it is the responsibility of "client" to provide proof of event insurance to XXXX at least one week prior to the event. It is not the responsibility of XXXX staff to secure wedding liability insurance for "client's" event day.