Every Tesla owner with an FSD capable Tesla (yours I’m sure) is getting a one month referral trial of the new V12 FSD beta with the latest software update. Mine started today thru 4/29, with 2024.3.6. So you can try it for a month free, don’t know if that coincides with your trip FWIW.
I thought V11 was amazing for the 3 months I had it last Nov thru Feb. Not perfect, but it performed very well 95% of the time including quite a few situations I expected it to falter, like properly driving through a construction zone to my amazement. More importantly when it was confused it never did anything unsafe - it mostly just hesitated longer than I was willing to wait (not fair make others cars nearby wait). I did let if figure out what to do when there were no other cars around a few times, and it did get it right usually. It made quite a few trips start to finish with NO interventions, city and highway.
Supposedly V12 is noticeably smoother and more human like behaviors, though still not perfect. You probably know V12 is completely new architecture, nothing like the 11 versions before.