We took a cab from our hotel but there seemed to be street parking. It was an evening tour and not terribly busy on the streets. Sorry this is late.
Plenty of parking. You meet the bus across from the Water Tower, on the Magnificent Mile. You might have to walk a few blocks but that's it. No worries.
Sorry, I really have no idea as I walked from my downtown hotel. The pickup point is very central in the main shopping area.
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