Honestly, I really wouldn't care. It's just not that big of a deal as I do believe anniversaries are really only special to the couple.
But, when other people make it a big deal, it can be very irksome. My neice (sister's DD) planned her wedding for my anniversary. Quite deliberately, expecting it to make some sort of special *thing* between us (which my mother encouraged
). That was never going to happen.
Neice and I were/are not close.
I don't/didn't condone many of her life choices.
Her fiance had been around for years (living together...not one of the choices I disapproved of) and, frankly, he made my skin crawl.
Other issues were that it's a very inconvenient time of year. It closely follows a major holiday that people travel for, making it expensive and difficult to get time off for. They invited YDD (17) to be a bridesmaid. No problem, but I suspect they thought that would ensure that we all came. YDD had a huge event that we had to plan and execute the following weekend. She was taking a leadership office in an international organization that required a ceremony and reception to plan. We put YDD on a plane, let her be a bridesmaid (and celebrate her 17the birthday) , while I planned her event and celebrated my own anniversary.
This was kind of a case of "I really don't care. Quit expecting me to."