England were greeted by boos from home fans after arriving in Mexico City ahead of their FIFA World Cup round of 16 encounter against co-hosts Mexico, after a delayed trip intended to keep their preparations out of the public eye.According to the Sun, England manager Thomas Tuchel and the Football Association chose to keep the team in their training base in Kansas City for as long as possible before traveling to Mexico City. The move was made to prevent rival teams from watching England’s training sessions ahead of the knockout match.The report said that England delayed their arrival to prevent “spies” from observing their preparations.Security around the England camp has also been increased, with police and security personnel monitoring the team base. Tuchel wants his players to adapt to the high-altitude conditions at the Azteca Stadium without revealing his tactical plans before the match.Despite the precautions, England received a hostile reception when they arrived at their hotel. Mexico supporters gathered outside the team hotel, chanting “Mexico” and booing as the England team bus arrived before the last 16 match.Security has been beefed up around the hotel following an incident involving Ecuador during the previous round.After Mexico’s 32 match against Ecuador in Mexico City, Ecuador filed a noise complaint with FIFA. According to reports, local supporters gathered outside Ecuador’s hotel late at night, using loudspeakers, horns and motorcycles to disturb the players.Mexico won that match 2-0.Ecuador had stayed at the Westin Hotel, and England wanted to keep the location of their own hotel undisclosed. However, there were concerns that the team’s situation had been leaked.When the England team arrived on Friday (local time), hundreds of local supporters were waiting outside. Some sang “Mexico”, while others whistled.According to the BBC, members of Mexico’s National Guard were stationed at the entrance to the England hotel, while police officers in riot gear stood behind barriers outside the property.England arrived two days before the match because FIFA rules require teams in the knockout stages to hold a partially open training session in the host city the day before the game.The team’s preparations were also affected on Friday after reports emerged that FIFA was considering moving kick-off six hours earlier due to the expected storms.The proposal was discussed less than 48 hours before the match, but the Football Association and the Mexican Football Federation (FMF) opposed the idea. The match will now be played at its original time.England will also have to deal with the conditions in Mexico City, which is around 2,240 meters above sea level. Higher altitude means there is less oxygen available.