If your hotel does not provide complimentary water bottles, you can use the free water in the gym.
Many theories exist to explain why minibars in hotels are so expensive. The hotel wants to make sure they can cover the costs of having someone check the minibar every day. There’s also the argument that they want people to spend their money at the restaurant.
Many of us want to save money on something as simple and inexpensive as a water bottle. Use the hotel hacks if your hotel offers a gym to save money. Take a reusable water bottle or use the free water offered at the gym.