hey hey d.balinski
took the train to reims from paris, bought train tickets day before at one of their stores near apartment. we did a private tour of the town and then out into the countryside with a stop at a private vineyard/winery through small alley roads, with photo op stops and walking through the grapevines. coming back by the champagne caves/houses were so crowded. we didn't stop since it would be a long wait. we wanted to taste local champagnes, not what we can buy here. it's your vacation and his wants. we did stop at cafe du palais at 14 place myron herrick 51100. had a flight with tastes of the local champagnes and appetizers and enjoyed out time before getting back to train.
bubbles-tuktuk.fr
couple tours they do around area and small towns
take a taxi from train station to avenue de champagne, walk down the avenue with gorgeous mansion/houses, some are open for tasting. a boulangerie and cafe , not much else. see if train goes back to paris from epernay or cab to reims station.
hope you have a great time
aloha