Let me give explicit details.
1. Yes. I have complained to Disney, both by phone, and by e-mail.
2. They have had little chance to respond, since I just complained today.
3. Booking details:
Upcoming cruise 1 (12/12/15 Fantasy):
Cabin 1 - me (age 54) and my 19 year-old son. I am platinum, he is gold.
Cabin 2 - my son's 19-year old girlfriend. She had not cruised with Disney.
We will all have to use the regular check in. We cannot even use
Castaway Club check in for her. We could have all stayed in one cabin, but it would have been awkward.
Upcoming cruise 2 (6/29/16 Magic):
Cabin one - me and my now 20 year old son. He will still be gold.
Cabin two - my wife and my 17 year-old daughter. Both are gold.
We are a nuclear family, and we are not all adults.
Our only option, if we wish to check in together, is to do it as gold members. Alternatively, we can cancel one of the cabins and all check in under platinum.