I first took my daughter camping when she is 1 and she was fine. I took a travel cot, buggy, and reins for if I needed a beak from her running off, but as you are in a field, she will be able to run in the middle and you will still see her. As for writing about strangers, its only like you going on holiday anyway, you wouldn't know people if you booked a holiday with Thomas cook etc. in the evenings I recommend taking blankets and letting her fall asleep in the buggy. That way you can sit by the fire with everyone else and not have to sit alone in you're tent while she sleeps. Have fun!