I just got back from a conference and I found it challenging, but I made it through. RTD's make it easier, but I only had a couple. I found that a shaker and shakes are easiest. Also, most motels/hotels have coffee machines, so as long as you have a spoon you can make oatmeal, soups, and hot drinks.
I actually like the hot cocoa with coffee (mocha). For my L&G I have found that most restaurants have pretty good salads available, and some have other food that is lean as well.
Well, good luck on your trip.. Someday I hope to make it to Montreal also.
Cheers