would you rather ride outside? It’s getting nice outdoors in most places. Do they workouts outside where you will actually be riding; this will make you a better overall cyclist.
Work on some tempo (90%), sweet spot, threshold, and even vo2max, as there were certainly be times you want to rev it up and over a climb. That will also push our your aerobic ceiling to grow a larger FTP down the road, and you won’t risk stagnation.
Don’t do all these in one week. Build to them and use vo2max sparingly.
Have an amazing trip!
PS, don’t forget to rest, that’s when you’ll absorb all the training and get faster