We run a bed&breakfast with an online reservation system. To propagate the changes in our calendar(s) I have made an ics-feed for every room. These feeds go to several sites like Airbnb so that visitors there can see whether rooms are available. The whole system is Drupal based.
But I cannot get it to work
At severinghaus.org is a validator of ICS-feeds. This site sees no problem. Feed is validated.
In Google Calendar my feed imports successfully, that is anyway what Google says. But no reservation is to be seen.
In Outlook 2010 it depends.
If I click on the link http://www.slapeninyerseke.nl/KalFeedYel.ics
it wants to open with Outlook and when one does that the calendar is imported and the bookings are there.
If however I click in the folder tree from Outlook on Other Calendars/Add Calendar/From Internet and I type in the address. It starts to work, but stops because it thinks the file has no appointments in it. I can then choose to nevertheless import it and indeed get an empty calendar.
In Airbnb I managed to import the calendar, but like in the 'successful' Outlook import updates never happen. One calendar has been open for a year now and nothing has changed.
Below you see a piece of the feed:
d and Breakfast De Oester: KalSyncYell
PRODID:-//Drupal iCal API//EN
This is clearly a mess. The problem to get the bookings imported at all is intriguing, but it looks like that when I can get the update problem solved then I can at least serve some of the AirBNB-like sites.