The window is short and there's no point in waiting for everyone's approval when a good deal presents itself.
We must act before the opportunity deteriorates, even if friends have different desires or budgets.
For example, a cheap last-minute flight to a great destination often outweighs group dynamics here, especially when funds are tight.
The ephemeral advantage of a low price or a special invitation can easily change the game, making the influence of companions less decisive.