Mostly because it's such a rare experience. :-)
I went to Las Vegas with a girlfriend for a few days, & budgeted $1500 for my share of the room, a massage at the spa, gambling, & food. I made $100 or so on the gambling (such a big winner :-)), the room was comped, & they ended up comping all of the food, save for the gratuities. That just leaves the spa treatment (an amazing massage followed by an afternoon spent lounging at the spa). All told, I think I spent about $300. I'm so happy that I get to deposit money back in the bank today.
My sister & best friend arrive tomorrow, & I've set a budget of $400 for their visit. We'll be hopefully visiting a winery, & having a couple of dinners out. I'm so excited to have them visit & see our new place.
I have a ridiculous amount of things to do today before I pick up the kids at 1:00 (early dismissal days), but so far, I have the energy of a slug. I have managed to tackle the enormous pile of laundry & started to unpack, but I need to get a move on if I'm going to get everything done. I also have soccer to coach this afternoon.
And, that's it. I need to get organized & plan out my last week of non-work time, because there's still quite a bit on my to do list.
Hope you're having a more productive day than me! And, have you ever come in under budget on a vacation?