"NXT Block Height 1630000 - Approximately Dec 25
Ardor genesis snapshot recorded at block 1630000"
so just to confirm at December 25th if we have NXT on the online wallet (mynxt) we will also get ARDOR?
First of all, for NXT you'll get Ignis, not ARDR. Here is well explained, how ARDR and IGNIS tokens will be distributed. I would suggest you to install official Nxt client from
www.nxt.org, install with light client option (no blockchain download), create new account (keep the passphrase in safe place!!!!), and send your all funds to newly created account. Mynxt wallet is 3rd party wallet, so better keep your funds in wallet you control.