I’ve always said-it’s a math exercise
I know folks that spend less than $50 a day and some that spend $300 pp or more. It all depends
What I always suggest is to set up a spread sheet. Your choice on column/labels, one needs to be people names and the other the day or resident. Once you get started it gets easier. I like names for rows and restaurants/days on top. If you are not spreadsheet savvy paper works too. Get you calculator out!
Heres the link to our menus. Most have pics of the location and some food. Reviews are a bonus!
https://www.wdwinfo.com/wdwinfo/dining/diningdetail.cfm?restaurant.id=169
ok, back to spreadsheet. As you go through the menus, pick what people will most likely pick. This can be a fun part of the planning. Ok it might be just me

. Remember it’s not exact, menus change, but it gives you the most accurate budget for your family. Always err on the high side. If one entree is $25 and one $30, enter the $30. Add in tax, someone will hopefully post. Add in gratuities also. You will be able to calculate each meal each day. Add in snacks/drinks.
This was very commonly done w the dining plans, to see if you break even or not. It’s also a great way to figure out how much your desired adrs will cost. It’s also a great resource if you get sticker shock at the cost and need to cut something. Good luck!