For the wedding, the bride and groom request that guests arrive in cocktail or formal attire. Check out https://www.theknot.com/content/formal-wedding-attire and https://www.theknot.com/content/cocktail-wedding-attire for some ideas!
Yes, there is free parking outside Artifact Events
The wedding is in the Ravenswood neighborhood of Chicago. Wrigleyville, Lake View, and Lincoln Park are close neighborhoods to look for AirBNBs. Anywhere downtown is only a short Uber ride away, if you were wanting to do more site-seeing during the weekend.