Do and don't in Rwanda

This is in regard with the Expat.com clarification to know the Rwandan do and don'ts.
Among the dos,where some experiences reveal to varry with the western world is sharing.In Rwanda when you propose some one to go in a bar or a restaurant takes for granted that the one who invited will cover the bills.
In the Rwandan don't,it's regarded inhuman to rebuke some one more especially in the public.Thanking some one constantly may also be regarded hypocrisy!

Hello. I am moving to Rwanda in March/April 2011.
Do's
Do learn the local language. Kinyarwanda, It is fairly easy once you start to practice it.
Do try and get linked in with as many people as you can. This will help you to broaden your friendships circle.
Do expect to be waiting around A LOT for almost everything.
Do remember that the last Saturday morning of each month is Muganda. It is where all people are expected to help with community cleaning etc. Shops are closed on this morning and it is forbidden to drive. If you want to fit in then get invovled.
Do learn and research the Genocide. It is a massive part of the history of this country and the people.

Dont's
Don't automatically think that everyone who looks at you with a strange look is angry at you. In my experience, a smile or a Muraho(Hello)or Amakuru(How are you) or even a wave changes that look in to a smile. Rwandans are very  happy and sociable people.
Don't give in to the barrage of "give me money" or "Agachupa"(water bottle)this mainly comes from the kids. If you give to one then 2 things will happen. Everyone else will want the same and fights WILL break out.
Don't try starting a conversation with someone on French. Because of the French role in the genocide, the country has separated ties with the french.
This is probably the biggest DON'T.
Do not under any circumstances or at any time ask anyone if they are "Hutu" or "Tutsi" Rwandans class themselves as Rwandans or Rwandese now and will be deeply hurt if you ask them what tribe they come from.

Don't talk to people you don't know. Don't reply to people you don't know. Don't give money or food - next time the whole crowd will follow you. Do not lend money to your new Rwandan "friends" - you are not going to be paid back. Do not think that the opposite sex likes the color of your skin - what is why they are so excited about you. More likely they like the color of your money.
Don't be naive - you are not in the US/ Europe anymore. Don't fear to be rude if your safety depends on it.