being the first to enter a freshly-prepared bath

exclusively reserved bath (found at ryokans)

(uncommon) an outdoor bath, often at a naturally occurring hot spring

vibration bath, a bath charged with an electric current strong enough to stimulate muscles and create a tingling sensation but low enough to be safe for healthy people

bathroom

regular customer

Kyūjitai form of 客観 (“objectivity”)

hospitality, treating a guest

(Internet slang) unwelcome customer

first-time customer, chance customer; customer without an introduction from a regular customer