6 players?

Hi all; so 1830 says that it supports 6 players, and I’ve been wanting to introduce a relatively big group to 18xx, so a six player game of 30 or Chesapeake would, in theory, work pretty well.

Having never played them at 6 players, though, I’m skeptical. The only game I’ve played with more than 5 is a 7 player game of 1880, which is obviously not the kind of energy I want to bring for the beginners. I’m worried that 1830 saying it supports six players is one of those technically true player counts a publisher puts on the box, moreso than something I should actually do. The fact that most other games cap at 5 players has me worried lol

Has anyone played 1830 at 6, or some of the closer varieties that support 6p (Chesapeake, 48 etc)? What are your thoughts on the general game experience, compared to 4-5 players? Have you got any advice for making a game run smoothly?