Hi Lisa and good luck with your start next week. You're right about the weather, it is so much more enjoyable when you're not so big. I went abroad last year for the first time slimmer, and enjoyed it so much more! The heat didn't bother me and it was great to be able to wear nice t-shirts home here instead of great big tents!
Just get through the first few days and you will be fine. Drink plenty of water and keep your goals in mind, that really helps.
Log on here for tips and advice and you will be fine. Look forward to sharing the journey. By the way, I reckon that 2 stone you want off my August will be but a distant memory way before then!