We stayed at Libbys in York last June, so we only went to Kbunk a few times, some neat shopping, and ate at The Stripers, which had some great Adirondack chairs for sitting around outside for a bit. A great Lobster menu, which includes a lobster pie! Drive also down to Ogunquit to see a different, more folk crafty kind of shop and some lunch places on the water that are pretty good,( not fantastic). Further south, go to Nubble Lighthouse for a fantastic evening view, and our favorite restaurant which was Fox Lobster House. Hidden in York, is the Dockside Restaurant with a great bar, local draft beers and an elegant menu if you want it, or fine bar treats also!
If you're into a fantastic Sunday Buffet Brunch, head up to Freeport, to the Harraseeket Inn, this one includes split lobster beside all the other great buffet foods for one price. Then walk it off at the LL Bean flagship store. You might also consider Kittery outlet malls, but I think that I have had it with enough malls in my life. Have a great trip, the people up there aa fantastic, helpful and fun. ( I guess that you can tell that we love lobster)