Hello Steve, first off well done on entry to the UAS - if u make the most of your time there, as many friends of mine did, you will make great friendships, learn an enormous amount about the air force and military life in general, and have the chance to decide if those are things you want out of life. If for whatever reason you don't succeed as aircrew, there are a great many other careers available in the service (although many will disagree!). Work hard, do your best, and it will pay off. Best of luck - joining up was the best decision I ever made.
Rgds
BL