You may want to give the browser a try on a different device or clear cache/cookies on your existing one. Otherwise, you'll need to keep trying every few days. No problem if you never get to check in - the porters will have tags to affix to your luggage and the staff will likely let you check in when you arrive without any check in time.
It would be very unusual to have any pic with a GB file size, even in RAW format. Most pics in the usual JPEG format would be 1-10MB and RAW maybe 10x times that max.
Royal Up started about 5 years ago and if you cruised in that time, they were likely available, you maybe didn't notice or didn't get the offer (for various reasons).
Welcome to CC.
Please ignore that poster on this subject - they post that text as a template and are completely clueless on what can be resolved by writing to that address. Be patient, your refund may take a while.
Only if you were going to buy Voom anyway and it's within $2-3/day of that price. It won't help get you into shows since they don't take reservations, though there's a dedicated seating (not sure they would be considered "better".) No real activity where there's a "fast" lane.