Can we buy tickets over the phone with a credit card?

No.

Only online or in person

Phone call no. Web browser yes you can buy tickets with credit card.

Online

I don't think you can do it over the phone. But online are at the kiosk in the front foyer.

I know you can buy tickets beforehand online and print them, but I don't know if you can over the phone. As far as I know it is just automated and just info.