I did this before. We looked at menus and broke it out by the restaurants we intended on eating at, rounding up the prices and adding an averaged tip for the TS restaurants. Our last trip was right before the pandemic, so prices have changed, but we budgeted around $110/person per day (including snacks). We came in under that. Quite a bit. On the DDP, our 9 day, 3 person trip would have cost $3213 for food. Our total costs, with a dessert party, 10 TS, 1 Signature, refillable mugs and tips, came to $1941.12.