DH and I are going on a slightly last-minute four-day holiday to the Peak District next week while DS is away at a sports camp. It'll just be the two of us and our dog, who's nearly 11 - he's still active, but probably won't manage very long, strenuous walks. We're staying in the Buxton area but happy to travel a bit, and we're hoping to avoid anything that's likely to be too packed and touristy. Any suggestions for dog-friendly hidden gems, gentle walks, and most importantly, nice dog-friendly vegetarian places to eat?