Consider the Quantity of Individuals Using the Tent Always, always ignore the concept that a four-person tent sleeps four. It doesn't. It would just sleep three; except for a snug experience two would be best in such a tent. The specifications of, say, a four-person tent implies that four people would be a good fit, with no space for bags, etc. So, a family of 4 should examine a six-person tent. This may offer you room for bedding and smaller areas to store clothes, etc.
Should the weather be poor, that extra space is going to be a godsend with all of you within the tent.