Considering the Bristol Hotel in Reims?
A VT member wrote the following comment about visiting Reims:
Mmmmm...Mumm! by oneonta_ni
I have been to the Mumm Champagne Caves twice and enjoyed it both times. There is a tour and explanation of the champagne making process and at the end of it you get to taste some champagne. They also have a good selection on champagne - some of which is only available in the town.
Mumm are the only champagne producers in the town that give tours. There is a charge - I think around 30 francs but it is interesting if you have never done that sort of thing.