Both can be upgraded to allow for more heroes at a time to go into treatment. These two buildings are your core source of stress relief, each have three different ‘activities’ for stress relief, both of these have the same pricing. Finally, and importantly, the Stagecoach allows the player to upgrade the amount of heroes you can have total in your roster.
Upgrading the coach will not only increase the amount of heroes that will appear each week, but it can also be upgraded to provide heroes of higher experience and better equipment. This is where you will be able to recruit new heroes to your roster free of cost, as it provides a random selection every week.