I love how clean and friendly Canada is. I've been to every province and territory except Nunavut. When I travel in the US, overpasses and ditches are full of garbage, garbage everywhere. But in Canada, everything is so much cleaner - the air, the roads, people's yards.
You cannot reasonably be expected to receive uninvited guests particularly after a recent move so there is nothing wrong with accepting the oranges and saying, 'We look forward to being able to have you over when we are unpacked and ready for guests.' Miss Manners is only relieved that your neighbor also had the good manners and situational awareness to leave after 10 minutes.