In my iOS app, I get an access token using the following code:
[self.facebook authorize:[NSArray arrayWithObjects:@\"user_events\",
@\"friends_events\", nil
The request
/me/events
only gives you the events a user is (maybe) planning to attend. The response doesn't include events which the user has been invited to (but not responded to), or declined.
There are other requests that may be of help:
You can check if a user has been invited to an event like so:
/EVENT_ID/invited/USER_ID
RSVP status can be checked by event:
/EVENT_ID/attending
/EVENT_ID/maybe
/EVENT_ID/declined
/EVENT_ID/invited
where each request returns a list of users with the queried RSVP status.