Traveling with 3 omnis for 4 months and in need of some help.

This spring I'll be backpacking through Europe and Asia with 3 different friends (I'm meeting up with them at different times throughout my trip so I'll only ever be with one of them).

I'm a bit worried that they'll view me as difficult. I'm comfortable in my choices, but I know that traveling with dietary restrictions can be tough, especially when you're on limited budgets like we are. Has anyone had a similar experience? Am I just being overly self-conscious?

If anyone has any advice on traveling as a vegan, that is more than welcome as well!