It really is a pain in the lower pelvis!
This is another potential banana skin. This is one reason why I would recommend new Muslims marry each other because there is no culture clash. This can be positive or negative depending on whatever background your spouse is from.
Often Islam says one thing and culture dictates something else and its not as clear as it should be. If you are near the indo-pak community then expect invites to spicy food, so keep a glass of water handy, or should that be a jug? Most families are welcoming but you might find some individuals who are not. Thats a sad fact of life.
Others might expect you to dress in a certain way or into traditional dress of their people. Halal clothes are any clothes that are not see thru, tight, and protect one from the elements. Now that my tribe has the only halal clothes and so on.
There are also cultural scholars who are the worst type of speakers. I do not consider them scholars if they belittle knowledge. They are often narrow minded, how strange!
Some uneducated people think the only Muslim people are they own tribe. Substitute the word tribe for any race or nationality of Muslim. Some may even say one cannot be Muslim if they belong to western race. Which is course racism and its totally unlawful in Islam. Anyone from any background can become Muslim, their past does not matter. The Prophet (may Allah bestow peace and blessings upon him) disliked any nationalism, and the only way that one Muslim was better than other was by peity/Taqwa. Not all culture is bad but all religion is good.
In any case, they need time to get used to the change, so try to be kind. This might be more difficult for some and less difficult for others. However, a good parent will want to see their children happy. Therefore, if they see happy then another religion will not seem so bad. This is a difficult transition for both sides, so bear that in mind.
One of my friends said that they should not tell their parents until later. Rather make a slow transition like becoming vegetarian. Let them find out by seeing a change in you, instead of telling them. Leave a prayer matt out, show your parents more respect and so on. This can be more positive for you. I have heard of parents throwing their kids out and even disowning them. One parent is normally more receptive than the other.