This need to vent is especially more prevalent in some societies than others, so yes the Guest Book is a great place to do so. One group I had, led by this pushy woman who I couldn’t stand from the first minute she arrived and I ignored like she had leprosy the whole trip, left me the following ‘review’ on the Guest Book:
“There were only 5 coffee cubs that matched and we were 6 people”. Left no other review. The height of childishness. I tore the page out of the book, but wish to this day I could have stuck it in her suitcase and send it back with her. LoL