It’s Saturday at Dorado Beach  a year-old resort in the Ritz-Carlton Reserve collection The night before  the 114-room hotel on Puerto Rico’s northern coast was at 98 percent capacity But at its Mi Casa restaurant  headed up by star chef José Andrés  breakfast is served on a deck with an Atlantic view  where skittering lizards and yellow-eyed blackbirds outnumber visible guests by about 8 to 1