I am thinking of getting a pet for the family. I have 3 kids and weekends will need to go out for more than half a day. What do you think is a suitable pet to have?

Depends on how much bandwidth you have left. Sounds like quite a lot on your plate. Perhaps a rabbit? My cousin who loves rabbits commented that their temperament are very much like dogs. They could be kept in a cage or in a space confined by gates on weekends when you need to be out. I feel that they are relatively easier to tend to and could be an option to consider. Ultimately, it'll be a family decision as everyone has to chip in to care for the new addition. :)