"If I hadn't had savings, which is depleted, I'd be scrambling for money or I wouldn't have a business," Shaw said. "It's a huge setback."
Shaw is among hundreds of business owners in small communities surrounding Yosemite who depend on tourist dollars. Tens of thousands of visitors from across the globe canceled trips because of the park's closure.
The Ferguson Fire is one of several devastating fires in California — the latest fatality being a firefighter from Utah who died Monday while battling the Ranch Fire, the largest in California history.
In Yosemite, the fires peaked during the busiest month for tourism. The park draws more than 600,000 visitors during a typical August, according to the National Park Service. Visitor bureaus in the area and the park are estimating roughly $50 million in combined tourism losses, said Steve Montalto, creative director at Visit Yosemite Madera County.
"From an economic standpoint, it's majorly significant to the region," said Montalto, who visited one of the most popular attractions at the park, the Mariposa Grove of Giant Sequoias, when it reopened Monday ahead of the larger reopening Tuesday.
"It's like a big breath of fresh air to be able to get in there and explore these places again," he said.
While hotel owners and other business are relieved about the opening, they say it will likely be weeks before their bookings return to normal.
Shaw said his hotel probably won't be more than 45 percent booked this week, when normally it's sold out well in advance. There were just 10 people staying there Monday night, he said.
"Once the closure hit that three-week mark, there's a full panic across the board for visitors, whether they're from Beijing or Paris or San Francisco," he said.
Tom Lambert, who rents out an apartment within the park, said he and his wife have lost about $20,000 in income because of the closure. And because the apartment is along the one entrance to Yosemite Valley that will remain closed for at least a week, he said his next booking isn't until Aug. 31.
"And now people are starting to cancel into September, and we have October people asking about canceling," Lambert said. "It's still rough. The summer is pretty much lost."
Officials are trying to get the word out that the park is back open. They have posted pictures of themselves and visitors at attractions holding red paddleboards that say #YosemiteNOW, and they're encouraging visitors to do the same.
As for the park, the dent in visitor fees will impact park improvements, such as fixing roads and updating facilities, ranger Scott Gediman said.
Because those projects are planned years in advance, all improvements for this year will be covered but projects in the future will be affected, Gediman said, though it was too soon to know which ones.
It's not the only national park struggling with wildfires.
A Montana blaze destroyed structures and forced evacuations Monday from the busiest area of Glacier National Park.
In Yosemite, visitors likely will notice some smoke and may even see flames on their way in, though the fire is almost entirely contained, Gediman said.
"People won't have the crystal clear blue skies they're used to," he said, but added that the smoke "is the best I've seen it in several weeks."
But as Gediman walked around the park ahead of the opening, he said there was a newfound sense of anticipation among workers who were tidying up campsites and preparing entrance stations.
"We are very excited to get the park reopened," he said. "It seems like a long time and it's certainly been very quiet."
When Shaw heard the good news, he said he felt pure joy. "It's a beautiful thing," he said. "You realize that roads are actually paved with money."