How much time should I give to re-introduce meat into my diet?

So for lent I gave up meat, and I kept being a vegetarian after Easter as a little competition to myself. But I am going to Hungary on a mission's trip over the summer and I don't want to be an inconvenience to the group. I know vegetarians might look down on my lack of devotion but it's a 3 week trip and I don't want the Hungarians to have to buy special for me. But my question is now that my body has been adjusted to non-meat (different proteins made and what not), how much time should I give to get re-introduced with meat?