Initially yes. However, you might need refinements but your dentist should have discussed this with you? Anyway, if your teeth aren't perfect at the end of your 20, you can have another impression done and more trays made to get them straighter. You'll have to ask if that's included in the price have paid.
It'll get easier to get the trays out, you'll master it. But remember to keep them in 22 hours a day
I've had mine almost 10 weeks now and it's flown by.
U31 & L23 finished.
Refinements U9 & L9 of 13 or 16?!