I can't believe that you took your husband to such a huge event for a first timer. That couldv'e easily have scared him off. I've reenacted for over 25 years (started at age 14) and have seen alot of first timers brought by spouses that got freaked out. It's great that the Feast got him hooked though. Both my husband and I reenact, and it's nice to be able to share in a hobby that is so diverse that we can share it as well as do our own thing (he plays with cannons, I shop)
He and I are both at the "authenticity Nazi" level, meaning that we both have done alot of research in order to do a good job in our impressions. Reenacting, living history, playing dress up, however you put it, is alot more fun if you and your spouse are about the same "level". You'll also find that you will gravitate towards others in the hobby with the same outlook, research level and opinions. We all participate at different levels --no one level is any better than the next-- the goal is to enjoy ourselves. That's what "hobbies" are all about. Enjoy the adventure you two have just begun!!