Visiting the shrine of Imam Hussain (peace be upon him) is considered one of the highly recommended deeds. Many narrations of the Imams of the Ahlulbait (peace be upon them) urge the believers to do so, and that Almighty Allah will reward the visitors a great reward.
It is permissible to delay the prayer after the beginning of its time, although it is better to perform it at the beginning of its time. The time for the Dhuhr and Asr prayers is from noon time when the sun starts declining until sunset and it is not permissible to delay it after sunset.
If the butcher knows that the animal must face the Qibla when slaughtered and he does not observe such a condition deliberately, then the meat of the animal is not lawful to consume. If he forgot to do so or he did not know that this is a condition then the meat is permissible to consume.
If the butcher forget to recite the Name of Allah when slaughtering the animal, then it is lawful to consume the meat. If he did not do so deliberately or out of ignorance then the meat is unlawful to consume.