To answer your question:
I personally try to stay away from restaurants (sugar is in everything); when I am on a trip I bring coconut bread, kale chips, homemade granola, functional food powder, veggies, etc,. And then always stay somewhere that I can do shopping + cooking.
My gut thought is to tell you to hold off on the diet until AFTER your trip. First off, this diet isn’t easy, especially when you are away. Additionally, there is a learning curve to this diet, and based upon you having almond butter you are still learning! Soo… go and enjoy your family’s trip. Feel free to read up on the diet, then come back after your vaca with a strong plan!