I would say nothing to be afraid of..just do the usual thing you know...

Keep smiling, take care when walking on the street because we have bad streets and construction works all over the place... if you are driving you need to be careful too...there are alot of bad drivers...

everywhere you go, you will find good and bad people...but i think it should be a good experience because qatar is a safe place..

Welcome to doha and have a beautiful stay