Disneyland fans are flocking to their keyboards to nab reservations for the opening days of Disneyland in an effort they say has proved time consuming and stressful. “It was obscene,” said Disneyland devotee Nikki Melland, who said it took hours to secure her desired dates. “It was insane, for sure.” Disneyland will reopen April 30 for the first time in more than a year; it’s been shut since the onset of the pandemic last March. Right now, California’s theme parks are allowed to reopen at 25 percent capacity, and Disneyland is requiring advance reservations for visits through June 28. When reservations became available April 15, it proved to be a test of patience for fans such as Melland. After logging into a virtual queue about 7:30 a.m., she said she entered a black hole. “It took me to the page of doom; the page we sat and stared at for …