On the subject of lighting, can anyone think of a way to shoot this hero-style image while still featuring the embossed logo on the front of the cup? No matter what I've done with reflectors and angles, I can't seem to get the embossed logo to come forward more prominently than the contents of the glass itself. It's obviously much easier with both the empty glass and the opaque Bloody Mary, but we don't want to pitch the cup for any specific cocktail, so the standard soda would be ideal.
Have you considered layering the second glass front over the first shot? That would give you the opportunity to play with clarity/contrast etc of the two layers independently.
And, fwiw, when I'm looking to have *total* control over lighting which can sometimes be compromised in a set, I like to shoot drinks out of the set and assemble after the fact.
Best of luck, it's a challenge to separate layers when you have similar tones and textures overlapping one another.