I often go to this izakaya. Usually any izakaya provides nomihoudai system. Nomihoudai is a common menu option at Japanese izakaya. It's often amongst the first Japanese words foreigners learn upon arriving in Japan. Usually It's an economical option for a party. People often spend more they expect at izakaya. There's nothing worse than organizing a party that ends up with an enormous bill that people regret at the end of the evening. This is part of Nomihodai's appeal, it has a completely predictable price. Its dark side is that it tends to lead to blurry evenings and painful mornings.
Nomihoudai are usually limited to either 90 or 120 minutes. Izakaya can be quite aggressive in their assessments of this time. It may begin the second you enter the door before you even order. You'll be asked for your last order about 30 minutes before the end. The time flies quickly and usually can't be extended, you're expected to leave at the end. Nomihoudai is surrounded in culture and conventions that give it a charm beyond the appeal of cheap drinks.