Not really. In order to find the wave function you need to measure both particles and compare both sets of superposition info to know that the particles were entangled. The information sharing between Alice and Bob would still have to be through standard means.

The solution is to base it upon the user session timer.

They should have a designated queue area, but still maintain those sitting at the bar. Alternate, one order for the seated, one for the queue. If you want to get fancy, replace the queue area with a cubby system and an app. Order from the app, pay, and get a QR code and a cubby number when your drink is ready. QR unlocked your drink cubby. The cubbies can be see through. I should invent this.

For anyone scratching their heads