No kidding, 950 people in Rogers for a lacrosse game sounds like a weird atmosphere
Colorado, Buffalo, and Saskatchewan average over 14,000 fans per game, Calgaty over 11,000, and Toronto almost 10,000.
Vancouver will easily be in that range.
EDIT:
NLL average attendances in 2018
Saskatchewan: 14,639
Buffalo: 14,181
Colorado: 14,070
Calgary: 11,847
Toronto: 9,700
Rochester: 6,760
New England: 5,557
Georgia: 4,437
Vancouver: 3,507
Colorado and Buffalo actually took a decent hit at the gate this year from the previous one due to the season starting over a month earlier and causing more arena date clashes.
Of those franchises:
Colorado shares ownership with the Colorado Avalanche, Denver Nuggets, Colorado Rapids, LA Rams, and FC Arsenal
Buffalo shares ownership with the Buffalo Bills and Buffalo Sabres
Calgary shares ownership with the Calgary Flames and Stampeders
Vancouver is going from the poorest owner in the league and a bullcrap arena to the Canucks group
San Diego is getting an expansion team with Joe Tsai of Ali Baba and the Brooklyn Nets as owner
Philadelphia is getting the Wings back with Flyers ownership
New England shares ownership with the WNBA's Connecticut Sun and the Mohegan casinos
Those seven franchises have major financial stability, and all of them but San Diego have control over their arenas which means they get to keep parking/concessions revenue and not pay to rent the building.
Of the others
Toronto's owner is independently wealthy and they play at the same arena as the big league teams, but no official affiliation with MLSE. Team is probably borderline profitable; it was said a few years back that 7,500 fans was about the break even point league wide but you have to figure Toronto is more expensive than suburban Atlanta or Saskatoon.
Rochester has been in its market since the mid 90s. Their owner is about to get a team in Halifax. Rochester is keeping a team no matter what, but there is still debate about whether the Rochester team moves the whole operation to Halifax with Rochester getting an expansion team or if Rochester is sold to a new owner and the old owner gets the expansion team in Halifax. Either way, Rochester is a small but reliable market. Halifax doesn't go down until next offseason in all likelihood.
Saskatchewan's owner is a small time joker who was barely treading water in Edmonton. Rather than selling to the Oilers, who were interested, he moved them to Saskatchewan and hit the lottery. They've led the league in attendance both seasons in the new market, and his costs are probably minuscule compared to Edmonton.
Georgia is now the biggest problem franchise in the league. Like Vancouver's previous situation, they actually play in a crappy arena in a suburb with small time owners. Speculation they could be sold to the ownership groups of either the Nashville Predators or Dallas Stars, but they're staying put next season.
I was legitimately worried this league would fold a few years back. In the last decade they've lost markets like New York, Portland, Boston, Minnesota, Edmonton, Philadelphia, San Jose, Washington state, Chicago, etc. And many of the owners they did have were just local dreamers who wanted to say they owned a pro sports team.
Now they're getting back into major markets with major league ownership in major league arenas.