I agree with the brethren. I would also ask about the FIRE regs in Finland.
To quote Mr. Miyagi: First crawl, then walk, then fly.
Load your UDS with meat and time everything, including drive time to and set up of event.
Then think about getting a 55 gal UDS (or two). Use the first to cook the meat to be reheated, and use the second on site, in conjunction with the first IF you think the BBQ will be a hit.
Dbl Bbl Smoker, UDS, ECB, Char-Broil gas grill & charcoal grills, SJ - Certified Moink Baller