>>485
Yoshinoya Veteran here.

I recommend going there at least several times a day, but there is no standard style for it. Just eat what comes naturally, the chefs prefer a unique style. I recommend staying a little informal.

Generally, it's wise to stay away from any sort of extra-large, extra-sauce, or other such grandiose requests. Extra orders are best used occasionally, mainly to provide garnish or additional flavor. A good example would be: "Alright, daddy's gonna order the extra-large!" vs "Give me a beef bowl with extra green onion." In my opinion, the latter is the vet's way of eating, and the taste is unbeatable. Just beware that this way, the chefs will have you marked from then on.

Additionally, I don't speak for everyone when I say this but within my group of gourmets, women and children are frowned upon.
So, eat frequently, and make sure to "garnish" your orders by adding the occasional extra green onion!

If your experience is anything like mine was, you'll probably find a bunch of competitors on the opposite side of the U-shaped table and fight to the death, not unlike a kaiten zushi. Good luck!