Hi Babs,
I did the Andalucia trip in November (my 2nd JY holiday) and really enjoyed it. If you do both the optional excursions (alhambra & gibralter) which are worthwhile its virtually a full programme.
Didn't fly from Glasgow myself but on our trip there was 7 or 8 people do that route so if thats the norm you wont be alone.
If you get Claire as tour manager she is very good.
I'm sure you'll have a great time.
Mick