Activity for Theresa

I want to include cake pulls for my wedding. I know who is supposed to pull; those close to you and who are single. Do you ask if they'd like to participate or do you just call them to the cake when it's time to cut the cake?

So, my stepmom and I are fairly close. She has been with my dad for almost 20 yrs. It's not often she'll introduce me as her stepdaughter and there are times when I'm at my dads I will refer to her as mom. Of course we have our "step" moments, but...

I'll have a matron of honor who will walk alone, but I wont have a maid of honor. So who would that leave the best man walking with?