Isn't cancellation for the first day's tour, 6pm on embark day?
Occasionally, there are tours that cannot be cancelled without penalty such as the Monaco Historic Grand Prix. The instructions for that one said pay in advance and no refunds if canceled.
The hours vary depending on the guest count. The more guests, the earlier the start of dining. The dance hours are generally a set before dinner. A set after dinner, pre-show, and more dancing after the show.
If you have OC documentation that shows your number of cruises, I recommend bringing it with you. Some database errors have taken nearly 6 months to straighten out even when shipboard personnel knew the numbers were wrong.
Where does it say, they don’t count? That’s not what I was previously unofficially led to believe.
You could book 1 less than Sapphire and apply the upgrade. If one books solo and upgrades, I assume it’s to a double window room. Just a better location but essentially same room. That’s not attractive. Would have to pay for a double in order to get a worthwhile upgrade.