John Foley decided to watch the game at Ball Arena with his family instead of viewing at his home outside of Denver because "I got tired of yelling at my TV."
"Good picture here," Foley said. "Better color too."
His wife, Joanne, said she didn't want to be anywhere but Ball Arena on Sunday night.
"We wanted to experience it with a lot of fans, not sit in the house," she said. "It's not the same."
Watching the Cup-clinching win was sweet for Larry Villinger, who had been a season ticket holder since the team moved from Quebec City in 1995.
He savored Colorado's Cup wins in 1996 and 2001 but gave up his tickets after the Avalanche's 48-point season in 2016-17.
"I lived through this a couple of times early on, with the drought in the middle," Villinger said. "It's so sweet now. It's unbelievable.
"Like I said, (I) was one of those (who) gave up on the team," he said. "I thought they wouldn't be competitive for a while… and now they won the Stanley Cup. It's amazing."
Roger Boyce came to the watch party alone after he couldn't find any available friends to join him.
"I said, 'For 20 bucks, I'll come down and watch it here instead of sitting in my living room,' you know?" he said.
Sporting an old Ray Bourque Avalanche jersey with a 2001 All-Star Game patch, Boyce entered the building expecting an Avalanche victory.
"I thought 'it is going to happen,'" he said. "Yeah. Oh, [heck] yeah."
NHL.com independent correspondent Ryan Boulding contributed to this report