Direct answer
The Coffee Cozumel for laptop + espresso mornings. Casa Mission for hacienda breakfast plates. Mañana Restaurant for the locals' Mexican-breakfast institution. Diamond Bakery for the pastry-grab. Most cruise-pier brunches are not worth it.
Cozumel's brunch scene is small but solid. The Coffee Cozumel is the digital-nomad/laptop morning. Casa Mission does an elevated hacienda breakfast. Mañana is the locals' Mexican-breakfast benchmark. Diamond Bakery for grab-and-go pastry + coffee. Avoid the boardwalk brunch spots adjacent to the cruise piers — same logic as the seafood there.
