You'll come out of this experience surprised at what you're capable of despite your stutter. Asking for directions, ordering food, meeting new people and finding your way around new environment are all skills that will help you in the future. I've travelled extensively while stuttering. Apps like Google maps and translate are your friend. But remember if something is worth saying, then say it! Sometimes your own discomfort at your own stuttering is far less important than enjoying your time away. I hope you enjoy travelling, it's an enriching experience!