The 4-foot High Club

From this directive, I would think taking the train would be no fun. There are other perks of train travel both for purpose and pleasure. However, if you eschewed the prohibition you could join the "4-foot high club"

Not the least of the benefits of train travel over car and plane is that you can get up and walk around without being to told to return to your seat. You CAN use your phone and computer the entire time of your trip. So if refraining from carnal pursuits is not a deal-breaker, taking the train is a good option.