On our January 2015 trip we saw busses running as early as 6:45. But that'd be to MK and then you'd have to get to the Contemporary. Your 7 am reservation isn't going to work with bus transport.

In the past we have on occasion used a taxi to get to a dining reservation when time was short or during bad weather. On our January '15 trip this did not work for us as some how info to the cab company got mangled (3 traveling instead of 5). We were very late to our supper at 1900 Park Fare. I asked Bell Services to call to tell them we were delayed and the folks at the restaurant said they hold reservations 20 minutes. I think we were beyond that.

Also, the quickest way to the Contemporary from MK might be walking. This is not a bad distance at all and unless someone in our group really wanted to experience the monorail (and it was running) we would walk.

We have had great meals at the Contemporary in the middle of the day, after MK gets insanely busy. Altho that was the counter service venue and not Chef Mickey's.

Jan