I have made my own lemonade for yearss,,,they charge you for every coke or tea refill and this is free! When two people do it and drink alot, it can save 8 or so bucks.
All you do is ask for lemon and they always bring me a saucer of it,,and it is better for you than cokes or tea.
I kinda like all this frugality. All three of my daughters are learning it and love it,,
One of the local restaurants charges $1.00 per glass of water and will charge you again for a refill. He has made many people mad as they assume it will be free, so he gets many one time customers.