I think this is about more that waiting on people less able, though, isn't it?
Does his sister live with you? How to you and she get on together? What does your husband normally do around the house to help?
I don't think you are being unreasonable to feel worried about things on Christmas Day - they will be very different from what you are used to and hoped for. You would prefer to be at your daughters (where, presumably, she waits on you and your husband throughout the Day?)
Get your husband to set the table the night before, if necessary.
When your daughter brings dinner to your house, you have a choice - keep it hot (hostess trolley or similar?) or eat it straight away.
You can clear plates etc away, and your husband can load the dishwasher (if you have one) or stack the washing up for later on. It doesn't have to be done straightaway.
You can make coffee and reheat mince pies, then drink your coffee and read your book, do your knitting, go for a walk etc - basically, do what you wold like to do. (And if you would like to do the washing up in the kitchen on your own with the radio playing or listening to some lovely music, do that too - but you don't have to. There wont be much to wash up if your daughter is doing the cooking, after all.)
I hope you have an unexpectedly nice day, even though the circumstances are so very different to those we all hoped for.