Well, we picked up the messages on the way from LRH to our accommodation, and it couldn't have been smoother. Drive up, tap the app, and someone trundled the stuff out in about 2 minutes.

Lovely produce - even the fruit and salad for the first night was in great shape. Would definitely recommend to anyone renting somewhere and needing a base shop. Leclerc is one of the few that allows foreign cards to be used, but they're pretty much the best (IMHO) anyway.