You open both vessels of nectar and pour them both into your mouth so that you can ingest the fluid. Both taste good on their own, you've noticed that; the Tab is tart and the Faygo is very sweet; but together, it's like an explosion in your mouth and you've run out of fridges. You completely empty both vessels of their contents, although the Cola nonfeasance runs out halfway before after the last end, so you get another vessel for emptying into your gullet.
You are satisfied with your choice, although you do ponder questions of what's next, and where should I go soon?