I estimated $50–70 and went over and spent $120.
Friday: I had $20 for lunch and then dinner that night was $22. Saturday, I met up at the dog bar for $15 as predicted but on the way out of the house, realized all my sunglasses from last year are scratched so I picked up a new pair on the way $15. After the doggie party, I stopped at the grocery store $23. Sunday, I had lunch with a friend $15.
A great weekend and no regrets. Though I will need to have a few no-spend days this week to make up for it.