I have plans to be in Paris during the week of May 1st 2014 and we were thinking that May 1st could be good for a day trip to Brussels. Will the trains be running that day? And if so will it be very crowded on the trains? I know that a lot of sites and shops will be closed in Brussels but that's fine. Just thought it might be less crowded than Paris on that day.
(traveling with an 18 month old)