Flight
MSP is the main airport to travel in and out of during your stay.
Travel Note
If you are going to stay near White Bear Lake, please rent a car since it is easiest to get around that way. If you decide to stay downtown, you can take the train into the city and uber/lyft to the wedding venue.
House Or Rental
White Bear Lake is...well, known for their lakes. There are plenty of cabin rentals available to you, but make sure you book these fast as July is a popular cabin month and these will be taken quickly.
Travel Note
There is plenty of street parking and also an adjacent parking lot to the venue with ample parking for those that are interested in driving.