Q.watering lawn
How often should you water a lawn. Every other day? My husband wants to water every other day for 1/2 hour each side. I say 2x a week 1 hr each side. Which is better for the grass?

It is difficult for me to say considering that the decision on irrigation frequency needs to take into account the soil type, turf type, cutting height, shade vs. full sun exposure and the local weather patterns, just to name a few.
Here are two extension articles that will guide you in making your decision:
https://extension.colostate.edu/pubs/garden/07199.html
http://www.clemson.edu/extension/hgic/plants/landscape/lawns/hgic1207.html