For context - I live approx. 3-4 minutes walk away from a primary school which is quite large and busy. In my street and the 2-3 surrounding streets naturally parents park their cars and also walk whilst collecting children from school and of course some of the parents and children talk and laugh etc.
I've got a friend staying this week with me from out of town and occupying the box room, it's a pre-festive season visit and a chance for her to visit family nearby and do Christmas shopping in the West End and also to see me.
First complaint this morning to me "the parents and kids woke me up (at approx. 8-8.30am onwards am guessing?) going to and from the school walking from their cars" - she's staying in the small box room facing the street so would hear this. She was happy with that and refused the larger double bedroom and I don't even count the box room as a bedroom more of a spare. Just now - approx 3pm onwards she pipes up "I'm trying to WFH here and can't hear myself think with the parents/kids noise outside the window" - for context - we are in my back sort of dining room (which also faces the street) - she complained in my living room near the kitchen that the sunlight was too bright and she wanted to be near the front door so she heard doorbell go as she's having parcels delivered here (another 
as she didn't ask me beforehand about this just assumed I'd be ok with it, but what the hell?!). She has earphones in on and off - says to me "sometimes I like music on, sometimes I do Zoom calls with them in, sometimes I just like normal background noise!".
AIBU to tell her to stop moaning about something so petty which is transient noise and goes away and if she's that bothered there's a lovely Travelodge in the next town which is free?! I love the noise of the kids and even the parents parking which has got more busy over the few years I've been here doesn't bother me now as they're generally considerate.