Just keep remembering what's important. A DW is, truly, about what you and your FI want. People who can join are a plus. Easy to say don't sweat it but I feel you and many of us can relate. You can't explain to the people who don't get the DW concept so try not waste your positive energy on changing their minds. The guests who do decide to go will be thanking you for having a DW by the time the trip is over!