DEAR ABBY: My best friend of 40 years has asked me to fly to her son’s wedding in a few months, arrive early to help with everything and not be included in the rehearsal dinner. I explained that I’m not going to spend more than $1,000 to fly out early, stay in a hotel, rent a car and not attend the dinner I’ve helped set up, decorate, etc. She said she’s not inviting out-of-town guests to the rehe…