I work a 9 - 5, but have literally 0 other commitments outside of work. As a kid with WoW I was only able to play for about 4 hours after school before having to do homework and the like. Lucky to have more than 5 hours in a night to play games.
Now though I can play from when I get home to whenever I decide to sleep. So on average I probably have about 6 or 7 hours, then however much I want on weekends. I should be able to go pretty hard at it, hoping to at least maintain above average gear levels. I don't need to be on the forefront of gear and progression but being able to pick on people with a gear advantage is always fun! :)
I work from home but I love my job so I will probably not get "vacation" for Classic release. Well, maybe one day for the release day excitement. :)
Also I like to play effectively and would like to get to 60 within six weeks. I can do 5 days played to cap. And will probably play like 2-3 hours a day.
For me it's just a game. Yes, it is game I love and will play for long time. But still the game and real life is far more important to me. I do not plan to raid much. Maybe just when the guild would need to help out but I do not like to spend hours on farming to raids. Thats why I like TBC more. I would like to raid effectively without spending too much hours before that.
Vanilla will be more chill to me. Chill, dungeons, pvp, world pvp and whatever guild needs. :)