Hello again. Well there are a number of things CarlingBlackMabel says that I totally disagree with. There is lots to do once work is over, just depends what you want to do. If your children are into sports then there is just about everything available - football, rugby, swimming, karate, ballet etc. There are Cubs & Brownies groups. Lots of parks. If you are into sports there are running groups, military fitness groups, tennis, cycling and so on. Google 'The Club Abu Dhabi' - this is a place we are members of and they offer just about everything.
I also disagree about the food. There is every type of cuisine at every level available. If you want cheap, medium priced or expensive Lebanese, Indian, Thai, Italian etc you can find it. There is good pub food, fast food food, restaurants affiliated with famous chefs and everything in-between.
I personally don't have a problem being a woman here - it's nothing like Saudi. If you want to work you can and there are many many females in high positions, including Emirati women.
The summer is pretty rubbish as I said, but everywhere is air-conditioned, it just means you spend 3 months indoors. Having said that, many people spend a lot of time in the UK indoors during the winter, so not that much different. Rest of the year is beach weather.
A lot of Mums don't work for a variety of reasons. Some don't want to. It can be difficult to find after school care and most schools finish between 2 and 3pm. Many families with 2 working parents rely on a maid looking after the children until they are home. Live-in help in very common and affordable for a lot of people. Part-time work is available but everyone wants it, so it's a battle to get it!
There are lots of toddler groups. Google Abu Dhabi Mums - it's an active group who do some great things. Horse riding, play groups, swimming, singing groups, bouncy castle sessions etc. Can choose things every day. There are lots of coffee mornings which may not be your thing, but are a good way to meet people when you arrive. Lots of craft groups, volunteering, lots of day exercise classes. My DH is currently doing a Spanish course in the evening, so if you want to keep busy you can.
I think I prefer Dubai just because I know it better as we were there 6 years. Lots of people prefer AD, so horses for courses!
Hope that helps - let me know if you have any other questions.