Damien Woody and Mark Schlereth point to their concerns for the Texans' offense as the reason why they expect the Raiders to walk out of Mexico City victorious on Monday Night. (0:57)

Although Houston Texans players and coach Bill O'Brien have said they are treating the Week 11 Monday night game against the Oakland Raiders in Mexico City as a normal road game, the team did distribute a memo with what it called "simple suggestions" for players on the trip.

In a memo sent out by the team, players are asked to stay in their hotel rooms, eat all meals in the team meal room, and not to order room service. It also says players should only drink and brush their teeth with bottled water and should not consume ice. The players were also instructed to leave expensive jewelry at home, to bring all prescription medicine in a labeled bottle and to not use any ATMs in Mexico.

Mark Waller, the NFL's executive vice president of international, said the league was not aware of the Texans' memo but also said individual teams are responsible for their own day-to-day activities.

Waller stressed the NFL shares concerns regarding the players' health and safety wherever they play. Waller said the game in Mexico was no different than any other international game. The NFL already has played three games this season in London.

"With the world we live in today, there are a lot of concerns everywhere," Waller said. "It's a complicated world."

The Raiders, a team spokesperson said, will eat at the team hotel with food provided by the establishment and the league will provide bottled water and Gatorade. The team has experience with international games, having played in London during the 2014 season.

"We understand some of the issues that are there, potentially," Raiders coach Jack Del Rio said. "That's been addressed. We'll put our plan together and go down and compete. I know it's going to be a great atmosphere. It sold out quickly. People are going to be excited to put on a good show down there. It should be a heck of a game."

The teams will fly charter planes into a private airport in Mexico City on Sunday and plan to fly out after the game Monday night. Waller said because it is a Monday night game, it makes for a shorter week. Thus, the league focused on getting the teams out as quickly as possible by using a private airport.

An NFL-themed mural can be seen outside Estadio Azteca, the Mexico City soccer stadium that will host Monday night's Texans-Raiders game. Brett Gundlock/Boreal Collective for ESPN

O'Brien said the memo was not unusual for organizations to distribute to its members who are traveling to other countries.

"We're taking our team to a unique, unfamiliar environment to play an NFL game where basically peak performance is a necessity, so it's responsible for our organization to offer simple suggestions," O'Brien said.

The Texans also provided players with ways to improve hydration and ways to address the high altitude in Mexico City. Azteca Stadium is at 7,382 feet above sea level, 2,100 feet higher than Denver. When at home, Oakland plays at three feet above sea level; Houston at 65 feet.

Raiders left tackle Donald Penn said some of his teammates have been using elevation training masks on the treadmill and in the weight room.

The Texans' memo included information on avoiding the negative effects of altitude and how to prevent altitude sickness -- stressing hydration.

Texans left tackle Duane Brown said he wasn't concerned because he knows the Raiders will also be dealing with the same issues.

"We're on an equal playing field," Brown said. "No one's more used to the altitude than the other team, so we're all going out there with the same struggle, if there will be a struggle."

Added Joseph: "It really doesn't make a big difference. In Denver, it was the same thing. People talked about it, but I didn't feel anything."