When low on funds for the luxuries I like this is what I have done in the past.
I packed a loaf of bread, some luncheon meats,peanut butter, jelly,,lettuce,veggies,etc & made sandwiches.
I put some drinks, bottle water on ice in a cooler.
If I wanted coffee, I would fill the thermal full of coffee to take with me.
Making my own sandwiches were healthier & definitely cheaper than what I would have paid at McDonald's.
Hope you get the help you want.
But, in case you don't-try packing a lunch.
Take care & have a safe trip.