In most places like this what they sell is branding, the restaurant looks cool right from the outside, to the inside sitting down to the food plating.
I think most restaurant servers give such an attitude due to too many customers they have to attend to all the time, but that is not cool.
All in all you seem to had a great time in your outing with your cousin, and now I feel like eating some amala, ewedu and gbegiri hahahah😅😅