I've been giving out about 25% of each batch. Some of my earlier batches have been more widely distributed, but that's more of a case of whether someone else has a barbeque party or if some friends from out of town visit. I'm working with a friend who's going to be giving away some of last year's Chocolate Orange Port out as a Christmas present, so in that case, about two-thirds of the yield will be distributed immediately.
For storage, I've got a wine rack that can store 29 cases, and it's about one-third full right now. I've only be doing kit wines, but I've got 12 varieties ranging from 2 months to 2 years old.