Qatar
Tips?! First and foremost plan a visit to Doha with your significant before you make the leap. If you come here and don't have their support you will definitely not be happy.
Let's see...depending on the age of your children, schools are very difficult to get into. Check around ASD, ACS (currently advising they may lose their building lease), Park House, Doha College, DESS, etc...
If you have nursery school aged children be aware that once they turn 4 they will not be allowed in nursery school and you need to have a school with a pre-K program lined up.
Medical issues - it's very hit and miss. Some have been quite happy with different things. My wife has had issues and we are flying her to Hong Kong after three hospitals and more doctors than that have been unable to help. Also, unless you are bleeding to death and need a hospital procedure be prepared to wait a long time.
Traffic is horrible...unless you are from Mumbai or Delhi and then it's probably not so bad.
Housing continues to be an issue with rents on the rise.
In general it's expensive to live here and your bang for your buck probably isn't what you are used to.
Positives...
Our girls love their school (ASD), the weather is great in the winter, and you'll meet many nice people.
OP