If Acapulco had an earthquake would it be felt in Cancun?

It is very unlikely that a significant earthquake in Acapulco would be felt in Cancun. Cancun is located on the Caribbean coast of the Yucatan Peninsula, which is over 1,000 kilometers away from Acapulco on the Pacific coast of Mexico. The distance and geological structure of the region mean that seismic waves from an earthquake in Acapulco would be significantly diminished by the time they reach Cancun. While tremors might potentially be detected by sensitive seismic instruments, they would likely be too weak to be felt or cause any noticeable effects in Cancun.