Big huge blowout anniversary party, with fancy clothes? Hell yes. I had one of those myself. It's the pretend wedding with bridesmaids etc that's insane, not the desire to celebrate a really big day on a big scale; and the tenth anniversary is a pretty big deal. And a great thing to celebrate.
lol and my idea of a huge party was 75 people at a sit down dinner with booze and all kinds of good food, everyone in black tie/formals, place cards etc.