Our family hiked to the beach (2 miles in, 2 miles back) and was great but a few warnings. First, bring tons of water. We started around 9:30 am and by the time we were heading back it was quite hot. You also need good hiking shoes (I used running shoes but would have used hiking boots if I had it to do over again). There is a lot of climbing rocks, muddy spots and you need good shoes.
It's also hard. Don't let anyone fool you. The first 1/4 mile is up a very steep incline over rocks (and is even trickier on your way back when you are tired and navigating the rocks). The first mile is up/rocky/tricky. Second mile to the beach is more mud/dirt and downhill (but remember you come up that again and it's tough when you are tired/hot). We took off our shoes and crossed the small river to the beach. Totally worth it - nice cool off for your feet and there are adorable cats on the beach who are pretty good at coaxing food out of you.
Overall, totally worth it but be prepared and be ready for a tough hike!