we are renting a house in new seabury for three weeks from 27th July, and i would like to order online, ca i do this so the shopping arrives at the house on the afternoon of our arrival?

I don't believe so but you may want to call the store. I do know that Stop & Shop has a program called "Peapod"that does exactly what you want.

I'm pretty positive the Mashpee Roche Bros. does not have online shopping or delivery. You can use other apps though like stop and shops service or instacart. It just won't be from Roche Bros.