When you are preparing to travel, under what circumstances will you not be allowed to bring a selfie stick?

Generally speaking, selfie sticks can be used when traveling. I often travel abroad and often see people using selfie sticks to take photos. Places where the use of selfie sticks is expressly prohibited. For example, in museums, important conference venues, in front of military facilities, etc., there will be notices prohibiting taking photos or using selfie sticks. Disneyland also explicitly prohibits the use of selfie sticks.