NFL Warns Houston Texans Don't Bring Expensive Jewelry to Mexico

With the Houston Texans going to Mexico for a game against the Raiders this weekend, the NFL has sent a safety memo to the team -- essentially advising them how not to get robbed ... or diarrhea.

Among the tips laid out in a memo obtained by the AP ...

-- DO NOT leave the hotel

-- Leave expensive jewelry at home

-- Don't bring large sums of money

-- Don't use ATMs

-- Only drink bottled water

-- DO NOT order room service

-- DO NOT eat outside of the team meal room

According to the AP, the Raiders did not get the same memo.