If a person wants to stay 10 days or more in a place, in this case prayers should be performed complete and the person must fast. And if this person wants to stay less than 10 days then prayers should be performed shortened and the person cannot fast. The beginning of 10 days is from the moment of entering the destination, for example from noon of the first day of arrival until noon of the next day is considered as one day.
There is no issue with doing this, but if that person doesn’t join the congregation before rukū‘ of the first rak‘at then his/her right is voided.
He should perform the qaḍā of prayers (i.e. perform them again later as compensation) that he has performed completely.
Such fears and doubts are the insinuations of Satan. Don’t pay attention to that and attend the congregational prayer continuously.
He/She should recite them in a low voice.
If other people consider you just then there is no problem for you to be Imam of congregation.
It is better to recite tashahhud or other dhikrs while in tajāfi posture.
Attending their Friday Prayer with the intention of creating a great unity among Muslims is good and suffices in lieu of noon prayer on Friday. Furthermore, under such conditions, there is no issue with prostrating on carpet.
The time of the morning nāfilah starts before the Fajr prayer , f r o m the Fajr adhan until the appearance of redness in the east, and it is possible to perform that immediately after the night prayer.
Stand in the direction which is well-known among the Muslims as the direction of the qiblah and that would be enough.
It is permissible.
Travelers have the right to perform their prayers in al-Masjid al-Harām and al-Masjid al-Nabawi and also all of Mecca and Medina complete or shortened and complete prayer is better and there is no difference between old and new parts of Mecca and Medina.