Emulating the Kuffaar

Q: Is it permissible for a Muslim to celebrate valentine’s day?

Q: When people in my family get married, they normally make a big thing with the groom. They splash him and throw food on him and make a big noise. This is before the nikaah. When he gets married then they trouble the couple and on the first night they peep and other things.

Would this be emulating kuffaar? I hate participating in this, but they force me to and get angry when I don’t participate and really give it to me. How should I combat this?

Q: Some people drink juice or punch from wine glasses, normally at functions or on Eid day. Would this be correct? A senior Moulana from my town said that it’s haraam because it is emulation of the kuffar. These people claim that there’s nothing wrong with it and it’s just a glass. 

Q: My mom circles money around my head and sometimes even eggs for some kind of protection. I have a feeling this practice is not Islamic so I was wondering if it it permissible in Islam.

Q: There was a fun run race this past month that is called colour run. Basically the people run a fun run where along the way colour powder gets thrown at the runners. This is a global event which is now becoming prevalent in the Muslim community. The purpose as per their website is celebrating healthiness, happiness and individuality. I would like if Mufti can maybe give a general view on the harms of doing such races and also expanding on the nature of which this is similar to a Hindu custom (Holi)?

Q: From the below ibaarat it is understood that the following two things will be with tashabbuh:

1) قصد (to be مشابه)

2) ميلان

So if the any of the above is not found this will not be tashabbuh. Is this correct?

Q: What does emulating the kuffaar mean? Is it only confined to clothing or does it also relate to other aspects of one's life? We see the kuffaar driving cars and eating and drinking in plates and cups and we Muslims also do the same. Is this not also emulating the kuffaar in our actions?

Q: Is it permissible to say cheers (as is the habit of the kuffaar at the end of a conversation)?

Q: I want to know that if a Muslim lady puts colourful bindi on the forehead just for looking good (not red bindi). Is it permissible in islaam?

Q: Is wearing black thread on waist Hindu culture? Do Muslims wear it? If a person wants to wear it because he likes it not for buried nazar can he wear it? Can Muslim men wear belly chains?