its a matter of country, district, circuit and personal experience.
my wife as an example lives in a completely other religion than me. she honestly thinks that the society teaches that you dont have to be a witness to get eventually saved (funny thats somehow true... they say only JWs do things that are necessary to be saved and say in the same sentence that only god can say who will be saved... lol...), one can easily have an opposing opinion to WTS teachings, talk with others about it AND stay a JW. she also thinks that numbers, dates and stuff dont play any real role in jw belief and she thinks the 1914 problem is completely unimportant because its only a suggestion by the WTS and nothing which is important.
im not kidding. thats what she tells me. and she is a believer, born into, going regulary to all meetings since 25 years. she got all that weired opinions from her father which is a congregation overseer.
she talks away all the hundreds and hundreds of WT articles dealing with such stuff and forbid such opinions. she also has no problem studying the revelation book and still say numbers and dates dont play a big role.
she also thinks that when someone goes away from the religion noone is really forbidden to speak with him. its merely the sinners wish not to have any contact with jws anymore. (lol!!!)
it sounds completely crazy to me, but she seems to really think that. when i try to show her that the WTS teachings are not as she thinks she says im too negative and a nit picker.
when in the same congregation, such different views of the religion can exist i dont wanna know what differences exist on international basis.