When the guy done mine he said to leave it up for about 4 days, let it stretch and shrink.
He also told me not to put any sort of detergent on it when washing the car, the same for any protectants as well, he said once you start applying these things you have to keep it up and that the roof would be waterproof for a few years untill you need to coat it.
When you do start using the sealent/protectant he said to do it every 6 months (before the winter/summer)
I forgot to mention mines is Mohair.
I think with your last question it'd be ok to put the roof down for a while but not too long, it needs to stretch.
Hope this helps you.
.
ps i need door rubbers too (top ones) so if any traders are reading this could you help me out?
Cheers
Robert