With all the flights issues these days, I let my TA and Ss battle with the changes. My TA will give me the record locator number and I go to the airline's website and choose my seat. Usually I'm assigned United out of Dulles and I make sure to add the flight to my UAL frequent flyer profile. I also "garden" my flights which means I check them. Yes, obsessive but...it has saved me numerous headaches when aircraft changes, etc. For Med/ME cruise on Spirit in October 2023, I'm letting Ss and TA deal with that haul and I purchased the business upgrade. Dubai is a longggggg way.
Missy in Maryland (who got a call 2 weeks ago switching from AA to UAL on return from Alaska)
PS Once, when checking into Air France the day before a flight to Med cruise, I find flight canceled. Call to TA office, she deals with Ss, and we are re-routed via Delta. A good TA is a wonder!