I always had the car serviced at an Alfa main dealer and the service
schedule is a cam belt change at 72,000. It was never suggested to me
that it should be done earlier. It wasn't until it went and I started
reading up on it that I found that in other European countries they
were recommending 36,000. As for the oil, I checked it every 1000
miles; if it needs doing more frequently than that then perhaps you're
right.