No doubt directional antenna will have better range than Omni antenna but you have to repoint and retune the antenna every time you connect to a different AP. I have Omni antenna on my Roadtrek running on 12 volts DC. Setup is more involved, but once setup, it easy to connect to a hotspot. To connect, I login to the Wi-Fi booster using my cellphone browser (added to my favorites- for one click login), then scan the area for an open Wi-Fi, and then connect.
Wi-Fi booster is not a perfect solution but rather a backup or last resort attempt to connect online (at least for me), if you have a good Cell network like Verizon, you will have better nationwide coverage and probably not need a booster…but, there are areas with no or funky cell service and the campground Wi-Fi is the only means of connection outside, the booster could be a life saver. You can also use it to connect to free public Wi-Fi’s; just don’t expect that you’ll be able to video stream from these connections.
Here is the link to my Wi-Fi booster and how to set it up.
Ubiquiti Bullet and airGateway combo Winegard also has a new product called Winegard Connect (Wi-Fi and 4G LTE extender):
Check it out here.