When my normally cheerful wife arrived home after seeing “Mamma Mia!” last week, I barely got a hello.

“Do you want to do your readers a favor?” she demanded. “You need to tell them about the construction next to the Morrison Center.”

CliffsNotes of the next two minutes: “Parking-lot exit! Wrong lane! One-way street! 20-minute detour out of the way! Grrrrrrr!”

Poor girl. She had fallen victim to the Basic Law of Event Aftermath: That is, no matter how much real fun we have at an entertainment event, there is a very good chance we’ll find something to gripe about later. In fact, if anything vaguely annoying occurs — particularly near the end or afterward — it will be the only thing we remember about the entire night.

Summer has arrived, so now is the time to address a few of the mysterious quibbles of concertgoing. THEN, with luck, we can move on and actually enjoy all this music. (Or at least try, right?)

Why is the idiot fan in front of me standing/singing/making me want to ax-murder him on the spot?

Ah, yes. The Question. I have no answer. But I do know there are two things concert organizers can’t do much about: weather and fan behavior.

“We can’t control people that wish to be rude sitting next to other people,” says Greg Marchant, COO of Knitting Factory Entertainment, which presents concerts at the Idaho Botanical Garden’s Outlaw Field.

Worse yet, what irritates one person — dancing, for example — could be perfectly acceptable to another.

You have to sympathize with the venues. They try hard to please.

“We can help reseat people,” he says. “We can try and help them find another place that is better.”

Ultimately, this is on fans — and performers, who influence how fans act, particularly when it comes to sitting and standing at shows.

Why did the concert start so early and/or end so early?

Because of Boise’s noise ordinance, concerts end by 10 p.m. at the Idaho Botanical Garden — or, out of courtesy, by 9 p.m. on school nights, Marchant says. That means a show might start as early as 6 p.m. to accommodate multiple acts.

Eagle River Pavilion ends concerts by 10 p.m. to meet city and county requirements. Concerts at the Idaho Center Amphitheater must end by Nampa’s 10:30 p.m. city policy but can go later indoors.

(Speaking of indoors: The Knitting Factory Concert House — which is all-ages for most shows — tries to end music by 11:30 p.m., Marchant says, because Boise has a midnight curfew for minors. “We want to give kids the opportunity to be home by midnight,” he says.)

Why can’t I bring my own booze into the concert?

Two reasons: 1) Liability. 2) Profit. Everybody’s trying to make a living here — including promoters and venues, who want to sell you alcohol. Which brings us to …

Why did they stop selling beer before the concert ended?

Guess what? The longer people drink, the rowdier they get.

The Idaho Center’s policy is to end alcohol sales a half hour before the scheduled end of the concert, although, “We always reserve the right to shut down early,” general manager Craig Baltzer says. Other venues — Idaho Botanical Garden and Eagle River Pavilion, for example — play it a little looser and decide last-call time at the gig.

What’s up with the sound?

Outdoor sound can be affected dramatically by weather conditions. Try walking around at a concert — outdoors or indoors: You might be surprised by how much sound changes in different spots. Tip: Position yourself near the sound man.

Parking fees? What the #@*?

Taco Bell Arena charges for parking. So does Eagle River Pavilion. Other venues such as the Botanical Garden and Idaho Center still don’t. (But I would not be shocked if that changes down the road.)

“The bottom line is this industry — we’re just like the movies now,” says Creston Thornton, owner of Land of Rock/CTTouring, which puts on shows at Eagle River Pavilion. “Ninety-five to 100 percent of the ticket-sales revenue goes to the artist, so the only money we make comes from concessions, merchandise, sponsors, ticket fees and parking.”

Get your $5 worth. Carpool. Strap Dad to the hood. Or park a few blocks away and walk, tubby.

* What about drink lines, Porta-Potties at night and stinky hippies who wear patchouli oil?

Sorry, out of space. Maybe next time. Until then, try to go with the flow. Concerts are supposed to be fun. And with scenic venues like the Idaho Botanical Garden and Eagle River Pavilion at our doorstep, life is too short to sweat the small stuff.

Michael Deeds co-hosts “The Other Studio” at 9 p.m. Sundays on 94.9 FM “The River”; he appears Thursdays on Channel 6 News. Twitter: @IDS_Deeds