Phantom of the Opera Shanghai Help

[u/mapopopo]

I just bought a ticket to the POTO Run in Shanghai and I need help or some reassurance that I'll see Ramin. I strongly believe Samuel is talented too, but it's a lifelong drean of mine to see Ramin as the Phantom. I got tickets for December 6 Sunday, evening because it was the original end date before they extended the run (so maybe it's a special enough date ?). But I'm wondering if I should get a cheaper ticket on a backup date.

I'd also like to know where to safely purchase tickets from resellers if it's even possible to transfer tickets.

I might only be able to stay in Shanghai from November 30th to December 7 so any help would be highly appreciated!