Thanks for the feedback and suggestions. My friend’s husband asked their daughter (both their kids will be in for the weekend to celebrate their mom’s birthday and say goodbye to their home) and she thought it was a great idea. Hopefully my friend will be happily surprised.
My friend’s husband told me today that he’s taken responsibility for dinner and the cake…and he added people to the guest list. Guests were invited to contribute a nominal amount towards a spa experience. Everyone seems to be on board and I think I’m set now.