What a lovely treat to look forward to. We don't spend much on ourselves either, we just buy what's necessary and spend bits here and there on the house or garden, so when it was our fiftieth wedding anniversary two years ago, we saved up for a week in Italy in a really nice hotel on Lake Garda. It was a really special holiday, particularly because, like you, we either stay at home or have a few days away.
I hope you get as much pleasure from your holiday as we did, both in the looking forward to it, and actually being there. We will, of course, expect to see lots of pics when you get home, especially of you in your lbd.