Not disputing the fact that PADS have to buy food.
Disputing the fact that PTES, JNCO, SNCO and Orifices are all on different amounts, married or single.
Chances are all married ranks shop at predominately the same supermarket, so why the difference in daily amount.
Okay fine a higher amount for those who have to support a spouse and kids. But surely this is there choice to have such. By nature of this choice they must be aware of an added financial burden upon their salary as a result.
As to your original question about what singlies have to buy.
Majority of singlies do their training straight after work as opposed to going to scoff, therefor miss it so buy items to have after activity has stopped. There is the argument to do it later granted, however by the time it's settled your talking late into the evening when some facilities are shut. Also scoff is to some too early another reason why phys is done at this time.
Taking that on board singlies are therefor paying for food they aren't eating then shelling out again in supermarkets so they can eat.
Unfortunately we haven't got pay as you dine overseas yet.