I just think you need to do what you are comfortable with doing.
I had a wedding with MOB and wedding planner--no bride, no groom. This meeting was exactly one month until the wedding. Nobody thought to order the wedding cake

. Told MOB cake had to be paid for at this time since I was being contacted so late. MOB got the money to me 2 days later.
Started making gumpaste boot. 12 days before wedding...MOB calls and tells me the bride decided she didn't love her fiance and the wedding was cancelled. What could be done? I told her normally I do not refund anything if wedding is cancelled less than 2 weeks before wedding. However, I did refund a portion of it.
MOB called me 2 weeks later to tell me that reception venue would not refund her money--$3400. And she wanted to let me know the kind of business he was running. I told MOB that business owner was within his contractual right, as he had turned down other weddings for her daughter's. She just wanted to give me the heads-up about his business practices in case, I wanted to rethink doing any business with him. Thank you very much MOB. I think she was just wanting to try to hurt his business.
Sorry, didn't mean to hi-jack this thread but I have kept this one to myself for a couple of months...DANG, feels good to share that with other cakers.