The calls do indeed use the marketingCloudVisitorId. Switching between
Visitors/Visits/Impressions doesn't make a difference: launching the app
4 times (requesting the experience 4 times) counts as 4 Visits (which is
what I would expect), but also as 4 Visitors (which doesn't seem
right).The user does get the same conversion every time he calls the
location, so that's good.