We consider ourselves "Normal", messing around say once every 2 or 3 months, rest of the time we are like every other couple, seeing other couples or wife going out with another man happens generally during the holidays like Now (Xmas/New year), easter etc. So essentially this is extra for the sex life, we are not into any kinky stuff like caging/BDSM/multiple men and similar.
Depends on everyone definition of what is normal, and what they enjoy 🙂