Hi ya Chazz
You dont usually see the surgeon on the same day, but it maybe possible. I saw mine a couple of days apart.
Yes you can try different sizes, the lady who does your initial consultation will discuss what youa re looking for, show you some size examples of before and after and then find an appropriate size to your desired outcome.
They are very good at matching for you, even if you think they have it wrong.
You dont need a sports bra, they provide you with all you need.
I was very surprised that their suggestions looked just what i wanted.
Any more questions, PM me if you wish
Jemma x