at a local restaurant and she brings a football team of friends. How do you guys handle this blatant lack of decorum?

No need for long talks,

I will respect myself and walk away..... What becomes of her and her group of Almajiri beggars is none of my business henceforth.

Run away! 2 or 3 hungry hyenas can kill a full grown lion, if you marry her they will smell food and still trace you, hyenas are always hungry.

DanDeeBoss:
I pay for both of us, she feeds the rest.... Simple as that!!!

.. You’re nice oh

This shittt has never happened to me

We have a lot of hungry ladies around town.

If you join an invitation you were called for, you will experience the shame in quantum

dingbang:
This shittt has never happened to me

same here

we fix a date and you bring your friends without telling me

i still don't know wakanda shii am gonna show

just politely tell her either alone or in the midst of her friends that you were expecting only her or it was an outing, for just the two of you to get to know each other and ask her or them if they are fine with it.
if she says no, then politely take your leave, if she agrees ascertain if the evening hasn't been ruined ,observe her mood. if it's has also kindly take your leave. please don't waste your money for someone who doesn't care about you or your feelings.

What a wonderful menu she present to me, i eat all the food in her menu with no remorse....I will foot the bill of her and the friends on reason best known to me

That's not a date but "foodie call". It's easy to blame the guy- he might have over hyped himself while wooing the lady.