Promoter is trying to tart up the event/keep numbers in check, although this seems strange if s/he can hold up enough newbs to underwrite everything else. Don't hesitate to enter. 99% of the time, they'll be glad to take your entry fee. Cat 5's are still Cat 5's, even if a few are a little fitter and more experienced.

"Elite 5" is an oxymoron to rank right up there with "military intelligence."