Pretend play is always a winner. No need to be afraid you'll fail with. Me speaking here. My son loves pretend play and its funny because Before turning 3...around that age, he didnt play like these, role play and pretend play. And I thought there's something wrong with him because most of the kids do this pretend play very early. He didnt. And I think I know why, and that could have been because he always was on logical and Math related games. He has a logical thinking, rather than creative one.
But now things have changed. He LOVES to play this way, having multiple roles like a doctor or going to shopping, making food, driver etc etc.
So as I already know this, kids are different and develop different.

Anyways, it seems like you guys had an amazing time.
The drawing and the writing are the cutest! I keep these too! They are priceless! memories for ever and for the heart!