Thank you everyone, for the helpful recommendations. We had a lovely trip to Brewster, although we did not get to hit as many of the restaurants we wanted to try. We wound up eating at (or getting takeout from) JT's at least four times, because the in-laws and the kids liked it. The lobster roll was excellent and my husband loved the clam roll. We liked Cobies for the family-friendly scene and the ice cream, but found the food at JTs to be substantially better. On our one night out, away from the toddlers, we tried to have dinner at the Brewster Fish House but it was packed. So we ate at Spark Fish, where I had a terrific pan-seared cod. The rest of the food -- crab cakes, caesar salad, and shrimp scampi were nothing special. We also had a surprisingly good meal at Linx, the restaurant at the Ocean Edge resort. While biking on the rail trail, we had delicious panini at the Chocolate Sparrow in Orleans -- the marinated eggplant with cheddar was particularly good. Thanks again everyone!