I had to purchase a cash to card, card to pay to check a bag, is there a cash to card kiosk, and can I add cash to existing card

Depends on card company check with issuer of card

I saw a couple in the terminals, don't remember the brands.

Im not sire best bet is to call to find out before you do anything

Depends on the airline

I would definitely call the airline to find out exactly what my options are and I believe you do have options

Yes

I'm not sure you have to call depending on airline

The airline won't take cash to check a bag?