We will be in Ireland July 29-Sep 2 and are trying to decide how to get to O'Hare and what to do with our car.
Using the airport shared shuttle from our home in a suburb of Milwaukee to/from O'Hare will cost around $350. When we've used them to/from the Milwaukee airport, we've never had anyone else in the van, but that's no guarantee.
One limo company will charge around $380 for a private car to/from our house and O'Hare.
Taking a cab to/from the bus from Milwaukee to/from O'Hare will cost about $180, take longer, and be less convenient.
As I poked around on the Internet, I found some sites that offer parking (usually at a hotel) for $6-$7 a day, which would come out to $216-$252, plus about $20 for gas and tolls.
I plan to call some of the hotels we've used for park-sleep-fly and ask what their rates would be just for parking. A number of years ago, a Marriott charged us $50 for 17 days of parking because DH is a Marriott Rewards member.
Any other ideas?