Download ticketswap app and have a quick finger. Failing that wait til a week before and grab them off stubhub/viagogo.
I managed to pickup a few off ticketswap last year but they sell within seconds of being posted.
How difficult is it to grab a taxi/uber?
I'm staying pretty central. A 10 minute drive, but 2 hour walk so it looks like the only option will be a taxi. Will possibly get my hotel to pre-book one if thats possible.