The UAE thrashed minnows Guam 82-7 to advance to the final of the Asia Rugby Championship Division 2.
Jaen Botes scored four tries, while Saki Naisau notched a hat-trick for the national team.
It was the UAE's first official assignment since playing in Division 1 of Asian rugby in 2017.
They will next face hosts Thailand, who beat Kazakhstan 35-20.
The winner of Saturday’s final will be promoted to Division 1 and also move a step closer towards the World Cup 2023 qualification process.

Juventus sack coach Tudor after eight-match winless run
India's Iyer taken to hospital after fielding injury
Norris unfazed by crowd boos after winning in Mexico
Mbappe and Bellingham strike as Real Madrid edge Barcelona 2-1 in fiery El Clasico
Brazilian teen Fonseca beats Fokina to win biggest career title in Basel
