I have the opportunity to setup at a huge event here in Oklahoma that will have a significant amount of foot traffic (like 1000s) - this is going to be a huge kickoff event for my business and I'm planning on doing IV hydration but keeping the menu very small (I'm talking probably 3 drips - basic LR, immunity and hangover) + B12 injections. What would be a good gage for products to keep on hand? And certainly if I run out, then I'm just grateful. This event will span over 7 days.