Looking for an occasional sitter for our 4-year-old who sleeps through the night while we are out on evening dates.

Initial need for this Saturday the 24th for us to attend a late-night show. Would like to start before bedtime (7:30p) for initial introduction in case the child wakes in the night and is not surprised.
We also have an older Bernese Mountain Dog and two very well-behaved cats who largely sleep and appreciate the occasional petting but otherwise should be good.
Shift may go into the late hours of the evening, so a spare room is available to hang out if tired or TV with streaming if desired.