the Ubiquiti gear is GREAT!!!
Highly recommend it. Its carrier grade gear.
Yes those AP’s are highly directional.
I am co-ordinating the frequencies for the event so no jammers.
Even so, nobody blocks 2.4Ghz.
The ubiquti gear has an ‘illegal’ mode so you can boost the power to ‘insane’ levels for extremely long range. The only one doing any jamming will be me 
You just set the country to Estonia and it unlocks the high gain mode.
