Free mixing with non-mahrams

Q: I am a girl and two of my girl cousins recently got married and their husbands mix freely with them in playing some games such as cards or monopoly for example. They always force me to play with them and I try not to play with them anymore.

I heard that free mixing is haraam and I tried to tell them but they mocked me and said that we are just playing cards and we are not sitting near each other, there's a distance.

I wanted to ask what should I do? Am I sinful for playing with them because their husband's aren't my mahram although we keep distance? How can I convince them if it is haraam?

Musaafirs performing Zuhr Salaah individually instead of performing Jumuah Salaah

Q: If a couple of people are musaafirs in a city and decide to perform Zuhr Salaah in their hotel rather than go for jumuah, is it then:

(a) Best for them to pray zuhr salaah individually rather than making a jamaat OR

(b) Obligatory for them to pray zuhr salaah individually rather than making a jamaat OR

(c) Best for them to make a jamaat for zuhr salaah?

Meaning of the aayat "No bearer shall bear the burden of another"

Q: Could Mufti Saheb please explain to me the actual meaning that we take from the ayat which means: "No bearer shall bear the burden of another".

The reason I ask is because I heard an Aalim say that we think that our aamaal only affect us but it's not right because when Nabi e Kareem صلى الله عليه وسلم went for Mi'raaj than it was seen that all aamaal of the people was going up and conditions according to it go down upon the people. Meaning, because of our aamaal, people in Syria are under distress but wouldn't that contradict the Ayat.

From what I understand, is that the aamaal go up and according to one's own aamaal a person will get benefit or harm no matter what the condition. Is this the right understanding and if it is, should I in a way of extreme hikmat explain to the Aaalim who is my dear Ustaad?

Difference of opinion in Deen

Q: There is much confusion amongst people of knowledge regarding the term, 'difference of opinion'. Many students and scholars alike latch onto this term when it comes to social distancing in salaah and the closure of Masaajid. To clarify this dilemma, please provide us with guidance regarding the following:

1. Is social distancing in Salaah and Musjid closure a valid difference of opinion?

2. What are the limits of and what type of valid difference of opinions ought to be respected?

Purchasing a plot for development where the exact location of the plot is not demarcated

Q: Can a plot be purchased in a newly developing area where the exact physical location of the plot cannot be determined? They showed the plot on a map and the roads, other plots adjacent to the said plot, roads and park etc. in proximity to the said plot. They showed us that the area of the said plot and told us that your plot cannot be located now as the demarcation of the plots is not yet done. Is this sale and purchase valid?