Has anyone successfully ordered an ice cream float at a McDonald’s that’s not in Seattle?
An ice cream float as in vanilla soft serve with your choice of soda beverages (preferably Coca-a-Cola).
No. Never thought of it. But I’m going to now.
I grew up drinking “Coke floats.” Are you saying Seattle is serving them…or that they’ll make you one? Heading there next month 
Yes. The McDonald’s in Seattle and NYC will make you a Dr. Pepper float. Menu item.
Seems to me I remember this being done in SoCal, but a very long time ago.