re: Argentina Dove Hunt

I went back in 2015 and had a blast.

Here's the deal, your bird boy will be reloading one of your guns as fast as you can shoot the other and hand it to him. You could literally shoot non-stop if you want. The bird boy's job is to make sure you're not waiting on him and to keep you shooting. That's how the outfit makes most of their money.
This doesn't mean you have to shoot non-stop. It's your trip. Take breaks when you want. Shoot as fast or slow as you want. Whatever gives you the most joy. It's a once in a lifetime trip for most people.
In regard to pre-buying shells, I mean if there's a considerable discount I guess it's smart to do that. I personally would just wait to see how much you shot and settle up at the end but that's just me.
One thing I did learn is while tipping is great, these workers and bird boys also like merchandise. The way it was explained to me was that it doesn't matter if you tip $100 a day there's nowhere for them to go purchase things like an academy.. On the last day I gave my bird boy my noise cancelling ear protection, my hunting vest and a few more items I thought he could use. He was more appreciative of that than the money I gave him.
Hope you have a great time!!!

ETA- On the third day of hunting, me and a buddy were wore out. We got our bird boys to shoot and we loaded for them for about 100 rounds. It was a stiff competition and these little frickers could shoot!! They enjoyed that too.