I'd delete 'hereby'- it sounds a bit fake to me. I'd say 'member of staff', but I'm not sure how Americans use the noun.
What do you think would've come across my mind - I'd just say 'went through my mind'
To me, 'eatery' is the place, not the food, so I'd say 'I expect any food I get from Toim Hortons to meet hygiene standards', or something like that.
'In weekends'? 'On'? I thought 'on' was the perposition Stateside.
Oh, and I want my money back.- Not very fond of the 'oh'. I'd ask for a refund.