In March we're going to France for the first time. We'll be staying at the Marriott resort in Ile de France for seven days (no plans to go to Disneyland!), then on to Paris for three days. We have lots of plans for Paris. However, while in Ile de France, we want to take some day trips, perhaps to Brussels or take the chunnel to London. Is this feasible? Would love any ideas for things to do, places to go. We love wine, architecture, light hiking, food...How do I determine what train system to use and where the closest stations are? I understand there is a concierge at the hotel who can help once we get there, but would like to make some preliminary plans. Any suggestions will be appreciated.