Your first question has been answered before so I cut it out :)

I would support them no matter what. Frank is good for Hazel and I love both of them with all of me. Demigods (especially powerful ones like us) live short and painful lives. If they're getting married, I would be all for it. If they want to get married, they might as well do it soon since they never know which quest could be their last.

Frank and Hazel are doing well. Frank has fully adapted to his roll as Praetor and is doing great running things with Reyna. Hazel is a Centurion and is now demanding the respect that was stolen from her for a long time while she was at camp. I'm really proud of them and can't wait to go see them again.

I had to keep Camp Jupiter a secret. At that point, the Romans and Greeks were still at war. They still hated each other. Hell, for the first few months I was at Camp Jupiter, they called me Graecus just like they did with Percy because that was their lowest insult; Greek. They would've torn each other apart like they almost did.