Olá, bom dia!
How wonderful that you got to attend the Sisters workshop in Chicago. I'm sure you caught the fire from their enthusiasm.
In the States, our Kindergarteners (5yr olds) mostly learn the alphabet (name, sounds, writing) but what we call our first grade still has some students that need to refine them.
If you look at the Emergent CAFE menu (used with those still learning those pre-reading skills), you'll see that Recognizing both the uppercase and lowercase letters are listed under the Fluency section. Writing the letters would be a writing skill you might work on in your Writing workshop, but they certainly could be practiced in your Word Work time in Daily 5.
By the way, the use of the emergent CAFE is really for teacher knowledge, you certainly could move those strategies to the "regular" CAFE menu as needed.
We are glad you are joining in this journey!