The integration itself should be pretty straight forward, but I've never dealt with that many SKU before.
It's been awhile since I've done it, and the names have changed a little, but you need to first subscribe to "Restaurant Management Essentials" and then subscribe to the individual 3rd Party Integration apps.
These links should help:
You most likely will need to create a separate menu for these 3rd party delivery apps and use menu-specific pricing. The DoorDash and Uber Eats integration allows you to automatically increase the price, but Grubhub doesn't.
Since you sell Liquor, I'm guessing things might be a little more complicated since you need to verify age.
