Downtown Detroit will be studded with very important people tonight, from former president Barack Obama to country singer Luke Bryan. And don't forget about the boxing match at Motor City Casino and the Detroit Red Wings game.

However, for everyone else, parking will be a pain. It will be such a pain, in fact, that the mayor's office put out an advisory to Detroiters today urging them to arrive at events extremely early.

Here are the happenings and expected traffic delays:

The Red Wings will play the Winnipeg Jets at Little Caesars Arena and a live boxing match will take place at Motor City Casino Soundboard. Starting around 6:30, expect heavy traffic on Woodward, Cass, Martin Luther King Boulevard, Grand River and the Fisher (I-75) and Lodge (M-10) freeways.

Obama will visit Cass Technical High School, causing both freeway and street closures nearby between 5 and 9 p.m.

Bryan will perform at Ford Field. Watch for delays on Mack Avenue, Gratiot, Madison and Woodward starting around 5 p.m.

Another reminder: All parking that was illegal yesterday (within 30 feet of a stop sign, 20 feet of a crosswalk, 15 feet of a hydrant or intersection) is still illegal today.

Anyone asking you to pay at a surface lot should have a city registration.

Read more:

Barack Obama to rally for Democrats at Cass Tech High School on Friday

Detroit concerts: Luke Bryan, Fleetwood Mac, MC50, Alice Merton, more