Restaurant Ordering / Custom Tips on Checkout

Site URL: http://charlieparkerprovisions.

I need a way to do custom tips and square and stripe don't seem to offer this....plus a delivery or pick-up option for a restaurant.

charlieparkerprovisions.com is my site.

I like the way https://www.foragemadison.com/ did their site and it goes over to https://www.orderforage.com/ for ordering. Is this square/weebly integration? It looks embedded and much cleaner than example chownow/ss sites I have seen. Looking for any advice on how to go about this for a changing weekly menu and a need for custom tip for each order.

Thank you!!

Julie