Book early for holidays: both companies charge holiday premiums and need longer cancellation notice then.
Both have a 4-hour minimum, and both take cancellations only by phone with a live person.
Kid's Nite Out adds a $15 caregiver transportation fee to each booking.
Vetting, as each company states it: Destination Sitters background checks, drug tests and checks references; Kid's Nite Out runs background checks and requires CPR and first aid.