1. No
2. As you have already enrolled into First Select program. What I suggest is keep the AMB or NRV good for 3-6 months.
I expect you to be pre-approved for IDFC Select credit card, which is decent being an LTF card. Or ask your Select RM to provide Select CC after 2-3 months.
I don't...
If you already have their cards and want upgrade, best way is through branch. Credit card team or customer support won't budge.
If you want their Wealth CC and have their Wealth program account with NRV maintained, put request via Wealth RM who can do this.
Otherwise it's very difficult.
If you really want to maximize rewards on IDFC Wealth then use movie, lounge benefits as it covers more lounges compared to other banks.
Spend only for the month in which it will be higher to get 10X RPs. If you already have Super Premium credit cards then even this spend is not worth. Useful...