Anna,
you are right. He goes from 5.30 am to 1 pm with no nap.......

Up to a couple of months ago, if he was really tired they tried to make him nap during the morning, but they cannot put him to bed so they tried with the pushchair. Most of the times he refused to sleep, he was having fun....
Besides, as you guessed, they have fixed meal and nap times.
But now they don't report to see him tired...on the contrary they say he is really nice, happy, good behaving...he plays, eats, sleep...in a word, he is a very good boy.
Anyway, I agree it is too long A time, more than 7 hours!

And I must admit that when I pick him up in the afternoon he looks tired...
I also have another concern.
In one of my previous posts we discussed of the possibilities that sleeping too much during the day could steal night sleep. I am afraid that if he gets a 30-60 minutes nap in the morning he will be able to continue to sleep 2-2,5 hours during the afternoon. Don't you think it will be too much?
Ragarding weekends, actually he sleeps less during the afternoon, but we were trying to cut the morning nap just to make sure it did not rob night sleep....