We went to HHI last August to try to have a cheaper kind of vaca because this summer's a whopper for us (Europe / Med
DCL). We drove down from Maryland. Had never been down there before. It was realllly quiet and laid back. I agree with melanie18 - it was a little weird - everything, even the shopping centers are sort of hidden in the trees. There's a lot of Spanish Moss hanging from the trees too which adds to the hidden aspect.
We also thought our GPS was wonky!!
The beach at HHI is VERY WIDE and there are hardly any waves. In August at least there were a lot of jellyfish. It was super HOT. A lot of people rent bikes to ride on the beach because the sand is very compacted and hard.
We also enjoyed a lot of really good meals that week, although personally we didn't like that Mexican place that atlmgm mentioned. That was our most disappointing meal all week...I guess everybody has a different outlook on that type of food.
We really enjoyed Truffles Cafe, Roastfish and Cornbread (Low Country style cooking), One Hot Mamas (BBQ) and the Alligator Grille. Guisseppi's was a pizza joint not too far away that was OK. I've had better pizza but it was CLOSE and reasonably priced. There was about an hour wait tho for a table so plan ahead (or they deliver). We called ahead for ressies at Truffles Cafe and Alligator Grille (don't know about NOW but at least last summer we were able to get a discount coupon on restaurants.com for Alligator Grille - I recommend looking up HHI restaurants on restaurants.com before you go). There are also most of the usual chain places like Carrabbas if you prefer to go where you know. One day we did the Beach Party at the Beach House which was fun. They had a southern style buffet and pool games for the kids. I think it was about $25 pp or something like that and we signed up earlier that day. (I don't know if that was a seasonal thing or if they offer it all year long.)
We had a pretty quiet week and since we were there on a budget only went out one day for a splurge activity (water skiing & tubing for DS). Since it was summer we had a few days with some storms but usually later in the afternoon. One day it rained like ALL DAY so we ended up going to the one & only movie in town along with a few hundred of our closest neighbors.
It was just OK for us. We're used to a little more action (like at WDW) and it was a bit sleepy. I think we DID like it a little better than Vero Beach tho. Vero was very pretty but everything closed up at 9:00. We're late diners and had a hard time finding any place to eat that was open late at Vero. Vero is a good wind down after a week at Disney if you just go for like about 3 nights. HH is more tolerable for a longer trip because there's a little more to do - but not as much as at Myrtle or Ocean City or something. We did a full 7 nights at HHI and that was plenty long enough I guess. Mostly because we couldn't really play in the ocean because of the jelly fish. That was disappointing and it was too hot (mid-90's in August) to just SIT there. We'll probably go again one day but are not in a rush to go back. It served its purpose for us last summer. It was driveable and fit our budget.