Betza 15-16 says that one's allotment of money for the year doesn't include expenditures for Shabas and yom tov, for which one is repaid according to his outlay. (First off, am I reading that right? But I assume so, so that's not my main question, which follows.) What's included in this?
- Expenditures for anyone (oneself, one's family, one's guests, one's hosts (bring a bottle of wine when you go for a meal), anyone at all)? Donations to tom'che Shabas?
- Expenditures on anything (chulent meat, precut toilet tissue, candlesticks)?
- Rentals (tables, chairs)? Services (waiter)?
- The Shabas portion of stuff purchased for general use (one seventh the price of a canister of salt, or, combining with the subquestion above about non-food items and services, one seventh the price of a house or medical aide)?
- The Shabas portion of food cooked for Shabas but with leftovers eaten during the week?
- The weekday portion of food cooked for Shabas but with leftovers eaten during the week? What if one made extra so he'd have during leftovers for the week? Or what if none of it actually got eaten on Shabas (say, you forgot to serve it)?
With sources, please, where possible, of course.