If a field has only one available value, pre-select it (service, location, user).
Either make the contrast between dates and times greater or allow for the contrast to be adjusted. Currently light grey and darker grey are very similar and for some difficult to see when booking dates and times.
We are not located in the US and would like to have the Country code defaulted for our Events.
I would like to be able to pass a timezone into the instant booker as a parameter.
The ability to pass a Salesforce ContactID in event link, would be very helpful.
The ability to use the Salesforce App or browser to manually check in someone to an event. The QR code works great but not everyone brings their QR code.
The ability to pass a contactID when sending a link for event registration, which would then prepopulate contact info into the registration.