From today's Jerusalem Post:
"Lithuanian" haredim, who tend to be more rational in their devotion and shun emphasis on Kabbala, are less likely to trek to Meron.
Rabbi Yosef Shalom Elyashiv, the preeminent Lithuanian spiritual leader on halachic opinion, once expressed this approach in a pithy statement, "Sure, Rabbi Shimon is alive, right here in my Talmud".
More on Lag BaOmer here.