A visit is defined by an actual check-in! Milestone visits are the total check-ins across all locations in the MT tenant, all time!
To specify location milestones, you can use the location parameter within this condition!
Creating an autocampaign to reach out to clients when they hit milestones such as 100 visits!
Creating a segment of those who have less than 1 all time visits (ie have never been in the studio before) to target them with an offer!