When Obama stopped for a beer at the Iowa State Fair, he cost the owner of the tent about $25,000 in business, reports the Des Moines Register:

There are “two sides to this story,” said Mike Cunningham II, the third generation owner of the 65-year-old Bud Tent.
On one hand, Cunningham, 39, appreciated the historical significance of Obama’s visit …
On the other hand, the small business owner side of Cunningham fumes that the president “put a damper on what I’m trying to do here.” His Bud Tent was shut down at the most lucrative time of day, with a popular rock cover band, Hairball, about to perform at the Susan B. Knapp Amphitheater next door ­ with legions of thirsty fans.
“I was in a position to make a campaign donation against my will,” said Cunningham, a Republican.
Cunningham played the gracious host during the president’s visit ­ — smiled, posed for photos, raised a beer with Obama, gifted him a “Save Water; Drink Beer” T-shirt.

Fox News correspondent Ed Henry tweeted this photo of Ross Murty, who was catering for the press corps accompanying Obama, per the Des Moines Register:

Jarret Heil, whose dad owns a farm Obama visited while in Iowa, issued a statement slamming Obama, per the Register:

“President Obama’s first term record and rhetoric does not represent Middle America, entrepreneurs, small business owners and farmers,” he said in the statement. “President Obama repeatedly attempts to make this campaign about dividing Americans.”
The young Heil took issue with several policies and actions he attributed to Obama and the Democratic Party, including irresponsible bank lending, additional banking regulations, failing to pass a budget, snubbing the Catholic Church, “manufacturing” a ‘war on women’” and undermining small business.

Call it a hunch, but I suspect the vetting of venues (and owners) before Obama’s next Iowa swing is going to be a little more thorough.