Can you please check these sentences for me? Thank you

1) I went to a winter camp in the mountains with people from my parish. (How do you call the house owned by the parish where people can spend their summer or winter holidays?
2)The weather was bad (Or We had awful/terrible weather. It either rained or snowed).
3) A friend of ours came to visit us (came over to us). We couldm't go for a walk (across the vineyars, among the rows of vines, uphill, downhill?) are the all possible?
4) I went bobsledging and I had a snowball fight (or I was involved in..) with my sister.

1. Good.

summer house? cottage?
2. Any
3. Any
4. bobsledding, not I was involved in