Braces / Orthodontics Question.?

Hi
Heres a question
Well, Heres the Story
My dentist refered my to the orthodontist
The first time I went, the orthodontist the took impressions and pictures and said that i would need a functional brace then traintracks.
The next time I went it said on the card it said ‘ imp. tba ‘
and she took more impressions. & said that the functional brace would be for 7-9 months.
I booked another appointment, as instructed, for two weeks later, which is this coming thursday. When at reception, the receptionist said, oh its good being in the holidays, so you have a couple of days to get used to them before going back to school.
Now on the card it says ‘fit tba’ Duration 10mins
What will she do to me now. Does that mean i will get it on thursday? ( I presume she will be fitting but my real question is – DO I GET TO TAKE THEM AWAY WITH ME?)
BEST ANSWER 10 POINTS !
thanks, Sapphire