There is a bible text with the religions commentary that families are encouraged to discuss together daily. The weekly meetings as mentioned above are to be prepared for and attended...participation in those meetings is encouraged....be it commenting on material under discussion or doing parts on stage. The field service is personal choice as to when one does it, but groups are generally scheduled on weekends when most are free from work/school.
Celebrating holidays is considered wrong as most have what is considered pagan origins. Children in school must not (are not allowed) to participate in patriotic things, as this is considered worshipping the state as opposed to worshipping God. Association with those outside the religious circle is discouraged....proper choice of friends is only from among those of like faith. Moral excellence is important, so many forms of modern entertainment are frowned on.
Personally I have been out of the religion for many years so I am not up on current processes...I do know much reliance is put on their website and much information streams from there.
If you want first-hand info you could attend a meeting at their local kingdom hall...but beware...there will be a mad rush to convert you.