To want one child-free day where I can do something for me?

[FunPartyIdeas]

I tutor term-time only but have a 6 yo of my own. No pay in school holidays so very limited re holidays and days out.
AIBU to want just one child-free day? Or even afternoon? Or am I being selfish in wanting that little break?

No - you have to have secondary experience. However, have just had a quick google, and you can apply to be a KS2 SATS marker: https://www.gov.uk/guidance/key-stage-2-tests-how-to-become-a-marker