I love potato salad. You can even combine your corn and potatoes in one dish and serve a corn potato salad. Maybe a salad of tomatoes and grilled onions. Or an orzo salad, which is rice-shaped pasta, combined with cucumbers, tomatoes and onions. Something with a little crunch to offset the tender goodness of the lobster.
Service is, universally, the one area that all restaurants can improve upon.
The best advice I can give to diners who are unhappy with their service is to speak up. It does you no good to wait until the end of the meal. Be very specific about your complaints. Don't lose your temper. Just state simply and directly that you are not satisfied.