Thinking about how Ryland and Simon handle alcohol and honestly I can see them handling it about the same and pretty average.
Imo both have experience drinking like. Ungodly amounts. Grace when he was an undergrad (he had to stop to lock in proper for his Master’s and Doctorate programs) and Simon just whenever he and his Brothers could find the alcohol to get fucked up on.
I also like to imagine that Martian culture, being very communal in my mind, had a big bar/pub culture. Like it was the only other place people hung out at that wasn’t Church
So Ryland and Simon could drink together and pretty much get fucked up at the same rate
The catch is tho is that Ryland has an uncanny ability to sober up like immediately. Ask him a question or get him to lock in and he is no longer drunk like AT ALL. Simon, however, has tried drunkenly fixing an electrical system or flying a small spacecraft and it went about as well as you’d expect but his “fuck it we ball” mentality gets dialed up to 11 when he’s fucked up and somehow his stupid insane luck also goes with it so he’s, incredibly, never gotten himself or others killed.
Conversely tho, Simon never gets hungover. He could get fucked up enough to have a blood alcohol level to be frightening and wake up the next morning perfectly fine. Refreshed, even
Ryland, however, feels like there’s an axe splitting his head in half and he’s the most miserable, pathetic creature you ever laid your eyes on because his hangovers hit him and hit him like a truck