
yes it appears that there really is NO escape. They are all from Harry getting his money at Gringotts then wandering down Diagon Alley towards Ollivanders and then inside.
A film comes on 6 or 7 reels when it is delivered to the cinema and the projectionist has to tape them all together and make one big film. My bet is that Artbox only got one reel out of 7 - and this would explain why it's all from such closely packed bits. I think that it was better when they came from the adverts!