East coast flights to Europe are 5-7 hrs approximately, after departure they start the beverage and food service, then another round of beverage with dessert. One hr or so prior arrival you are being given the immigration spiel as well as the breakfast. You only have at most 3-4 hrs of rest. If you really want to try Mint, best to do it on the BOS-LAX route as mentioned above, where you will find it cheaper and longer flight, more chance to enjoy it.