L.C.
Long Beach is a great place to go-we've been there many times with the kids. There are some great little shops, cafe's, kiddie rides, etc. downtown (you could make a whole day of just that) and of course the beach. You can drive on part of the beach if you have an SUV type vehicle which is great if you have kids so you don't have to hike back to the bathroom. There are also at least 2 beautiful hiking trails that lead to lighthouses and AWESOME views. The hikes to Cape Disappointment Lighthouse are short but magnificient. If you went in Late August (we did this last year) it's the Kite Festival where you can see fireworks, light shows, and kite competitions on the beach. There is so much more to do than at ocean shores. If you want I can email you some personal pictures of our vacation last year so you can see what I'm talking about. Last year we tent camped and the times before we stayed at a place just outside of town that had a kitchen in the room and an indoor swimming pool and a playground for the kids. I would highly suggest you check it out and then go back again when your child is older so they can ride the kiddie rides. Let me know if you want pics. You can also check out Long Beach, WA on the internet. Have fun planning!
Oh I just saw you have a dog-the place we stayed is very dog friendly and dogs just love the beach.