The other day, I tried to add Multi-Sports package to my Welcome Package just for the hell of it. I mean, I'd love to have it but figured correctly that it wouldn't let me have it with the Welcome Pack. Regardless, it gave me a message at the top of my online account that the Multi-Sports package could only be added with certain other packages. It listed them all and along with AT120, AT120+, AT200 and AT250 it included each again with the words "annual subscription" behind. So I'm assuming you can.
It caught my attention because I'm just missing too much of the sports programming that I want and I'm really considering a jump up to AT120+ and the Multi-Sport Package as well (although, if they offered it, I would be content with just my locals and the Multi-Sport) and it would be my preference to pay once a year just so I don't have to worry about it. At one time, I used to pay for AT200 on the annual subscription. I was in college at the time, though, so economics began playing cruel games on me. As another poster said, though, they never allowed my locals to be paid annually. I would get a bill for the annual amount, my locals and DVR fee each December. All of the other months, I would get a small bill for my locals and DVR fee.