Is there a minimum amount of nxt a wallet must hold before it gets get Ardor tokens for the new project? Do wallets with 0.1 nxt get Ardor tokens or do they need to hold more nxt for that?
I read it's a 1:1 swap, but surely if there's only dust in a wallet that's less than the fee needed to send coins then that wallet won't get any Ardor tokens.
6. For the rest: yes, a 1:1 swap and you are in.
The Ardor asset have 4 decimals, while NXT has 8 decimals.
So yes, if you hold less than 0.0001 NXT would might not get anything if I understand it correctly (depending on how rounding is handled).
This is the asset that will be used btw:
https://nxtportal.org/assets/12422608354438203866