This Friday, I'll venture off into the mountains with my mother-in-law, 2 sister-in-laws, and a grandmother-in-law for a fun filled weekend cottage getaway. I love them all very much and genuinely count them as friends.. we all (with the exception of 'grandma') enjoy libation and star gazing in hot tubs and smoking good weed over a nice mindless comedy. We get along very well. That said, in the s…