I am querying some established research on a detail of ‘aspect’ usage, and would love to hear from my USn friends on these two questions:

1. If you were reporting on having attended an exhibition last summer, what sentence would you choose as your most natural style of usage? (eg, like saying ‘I went to the ball game…’ or whatever comes naturally)

2. If someone had kept you waiting for a meeting outside a shop, say, what sort of construction would you use if reproving them about their final arrival (please incorporate a variant of those last two words)

This is part of some research for a linguistics course, dealing with a variation between British and American standard usage, so your responses would be much appreciated. TIA