Why are you saying the whipped cream and flavors are not kosher? That’s false. The whipped cream, at least in the dd near me is kosher and chalav stam, as was the french vanilla flavor. I didn’t check about the other but all you need to so is ask. No need to assume its not.
On another note I have a question. I don’t understand how people drink coffee in diners or restaurant out of china mugs!! ( not kosher places I am talking about). At dd and Starbucks the coffee is poured into a to go cup, but in a diner the china mugs are washed in a dish washer along with everything else!