I've been asked to see if this location can have wireless throughout the entire resort. We have 1 clubhouse that has internet now, but we would like to broadcast that wireless over .5 miles/2640 feet in a heavlily wooded area. Here is the image of the location:

I was thinking of using some Cisco Outdoor equipment 1505G with a 14db Omni or sector antenna. With the combiniation Cisco states it will range 2.5 miles, however after looking at the location, it is very heavily wooded and will it still be possible. basically, there are cottages throughout the woods that would like internet. So the next question is, woudl they need special equipment in each cottage to gain access to the wireless?

Thank you all for your suggestions, it's appreciated.