My father-in-law owns a campground and he lives in a remote area. Luckily he was able to get a connection to him from Cox. Now he wants to cover the lot with a wireless signal so his customers can have WiFi. I work in tech and have a background in security so I know networking and basic wireless, but I’m not well-versed in long-range wireless. Can someone point me in the right direction of what I should be looking at to help him install? Should we be thinking omni-directional or is there something that can cover around 22 acres?

The clubhouse sits in the corner of the lot, my hope was to mount antennas on top, maybe a couple if needed pointing in different directions to cover the whole lot. Or would I need to place another antenna at the opposite corner using p2p and place an omni there to get full coverage? Price is neither here nor there, we just want reliable coverage. He currently uses Unifi products for the clubhouse. Thanks for any suggestions or advice!