Cleverly designed hat, thank you!
Written pattern can seem confusing, but it begins to make sense as you work through it.

Used size 7 US needles, 6 was too tight for me.

Pattern only in one adult size, not 6.

Added longer foldable brim with 22 rows (rather than 11). Totally optional. Looks great with the 11 rows, too.

Row 33: Kept knitting with Color A for 1/1 RC, then switched to Color B only starting on Row 34.

Rounded top of crown so it’s not pointy.
Did so by deleting rows 47, 49, 51, 53, 55, 57, 59, and decreased until 6 sts remained, then thread through.