The "Insert Field" in the Email Templates only shows a handful of field codes.
Where is the full list? like check in date, check in time, etc?
The insert field popup shows whatever is relevant to the current template. Note that there are different tabs of information there (property, booking etc) where the check in info would be related to the booking not the property, and you can also filter down in a tab to find stuff by name.
You can find the exhaustive list of all codes here: https://www.ownerreservations.com/support/articles/field-codes
Great. Is that in the interface menu? I thought I saw that one time, but last night I was scratching my head while I was trying to figure out the check-in time code.