Manage expectations.
Have a quick chat with the family about how the session will go. If you let them know what to expect beforehand, you'll set them up for success because they'll anticipate what will happen
Plan your outfits ahead of time. (And steam/iron them!)
You don't have to get all new outfits (unless you want to!). Aim for coordinating/complementary colors in your outfits, not matchy-matchy. Don't forget to wear shoes you won't mind seeing in photos. I'm happy to consult on outfits if you'd like me to. Send me an email or text with pics and I'll give you my opinion.
Make sure you set out everything you need the night before your session.
It'll help everyone if no one has to run around looking for a shirt that fits, one that isn't wrinkled, or matching socks.
Moms…get ready before everyone else.
If you "put on your own oxygen mask" first, you'll be less stressed about helping everyone else. Get mostly ready, get the kids ready, then finish up with those last touches before you leave.
Adjust nap/snack time accordingly.
Try to set your little one up for a successful shoot by making sure they are well-fed and have napped early enough for you to get ready and be on time for your shoot. Sometimes a quick (neat) snack on the way ensures that they won't be hangry during photos.
Don't pack your day too tightly around photos.
If you pack your day too tight, you run the risk of people being cranky... and it's anyone's guess if that'll be the little ones, the grown ups, or both.
Be early.
Allow time for Seattle traffic, and finding parking. If you give yourself a good buffer, then you'll ensure you get your full session time. (For mini sessions, it's probably safe to park in the loading zones near the building entrance, but please don't park in the reserved spaces.)