I rarely drink water. It's usually Pepsi Max or coffee with soy milk and no sugar. I need to switch from Pepsi Max to unsweetened black tea, I can handle that switch but not the switch from Pepsi Max directly to water.
I just found out that the shopping mall that's attached to the building I work in is having a free coffee week (7 am to 10 am). Multiple cafes as well, so I can score more than one free coffee per day. So I missed 2 days of free coffee, but I won't be missing the next 3. Only catch is that you have to bring your own cup.