Most retail and grocery stores will be closed on Monday, New Brunswick Day, but many tourist attractions will be open and some municipalities have planned ways to celebrate. Here's a look at what's open and what's closed. The Saint John City Market will be open from 10 a.m. to 3 p.m.Costco in Moncton, Fredericton and Saint John will be closed. Saint John city hall, Fredericton city hall, Moncton city hall and civic administrative offices will be closed. Saint John Transit, Fredericton Transit and Codiac Transpo in Moncton will not run.