But none could be bigger than those coming in from Canada.
According to Alex Ramos, who works for a Canadian bus manufacturer, hes expecting a group of 80 Filipinos to arrive from Canada Thursday.
He said each of these Filipinos spent $1,800 (P90,000) each for a package tour that includes round-trip plane tickets, hotel accommodation and tickets to the fight.
Ramos said he also expects some friends to come from Florida and Los Angeles. He said it would be like a big reunion for him and some friends.
Ramos spent more than a thousand dollars just to bring his son to Vegas for Pacquiaos coming fight against Erik Morales at the Thomas and Mack Center.
They came in by plane, and bought tickets worth $300 each.
But hes not part of the package tour like the rest of his friends from Canada.
"I saved a lot by not joining the tour and I got better seats than they do. And besides, I know my way around Vegas," he said. Abac Cordero