Mcsherrystown is a small place. you will be right outside of Hanover PA where you will do most of your shopping and dining. there are several gyms to work out in One of the biggest is club 200o in Hanover, YMCA also Hanover, and there are many smaller ones.
We have Red lobster, Ruby Tuesdays, Texas Road House, Chillies, And most of the chain places. many mom and Pop places. Pizza out the yazoo, Tell me what your favorite food is and i will suggest a place for you to try.
Also many parks
State Parks. I think you and the little ones will enjoy Codorus state park...There is so much to do.
let me know what other questions you have i live right in the area and am happy to be your eyes for now.