Olive garden does not deliver they use delivery services like uber eats and you have to order through the app and use a credit card.
I have never requested for a delivery. My guess would be to ask when u call them to place order.
Yes you can pay with cash.
Olive Garden is My wife and I's go to place for our date night so I wouldn't know about delivery but I would guess you'd need to pay with a credit card. You could probably pay the tip in cash.
I don't know. I've never tried...
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