For context, I see most shows more than once, it's just something I love doing and most of the time never tire of it.
I've seen Ferryman 3 times, and I love it more each time! I saw it twice with the original cast, and then again with the new cast. The new cast is stunning, and are so well matched. They went through a whole rehearsal & tech process, and fit the show like a glove.
Seeing it again gives you the opportunity to really dive into it, since you immediately know everyone and the stakes. I describe the show a lot as an excellent 3 hour Netflix crime drama binge, which is something most people do weekly. So, I don't have any problem going again! I could probably see it 3 more times easily.