Under a glaring California sun, “Twilight” fans took shelter in camping tents on Tuesday, as they awaited their date with Robert Pattinson and other stars from the latest film in the vampire romance series. Some 550 devotees of “The Twilight Saga,” many of whom have camped out since Sunday night in downtown Los Angeles, are being rewarded for their patience with guaranteed spots on the red carpet for the Thursday movie premiere of “Eclipse.” “It's just worth seeing all the stars. They bring the characters that we love so much to life, so we want to see them in person and cheer them on,” said Yolanda Rodriguez, 36, an unemployed graphic designer who came from San Francisco for the event. The fans, virtually all female, are living on the concrete plaza of an entertainment complex, surrounded by blankets, tents, umbrellas and cardboard cut-outs of the film's stars.