Tesco Student Transfer and working whilst at University?

I've been employed by Tesco for the last two years, and it is a really good job with plenty of benefits whilst i've been at college. However, I plan on starting university in october and moving away from home, and thus work. Tesco offer a student transfer program, so I will hopefully be able to transfer to wherever I move and continue working for them, but my manager is pretty useless and I have no idea how to go about doing this. Has anyone done this?
Also, this got me thinking, if I was to have a job, with Tesco or another company, whilst at university, would that mean I won't be able to come home during the holidays because I will need to work, because although it's fine saying I could take the holidays of as holiday, realistically, this may not always be possible.
So basically, I'm just wondering if anyone has transfered with Tesco and if what you do in holidays.
Thanks