the only times i saw elal make an issue, was back when i was a student in Israel, and i was on the flights at the end of the semester. I.e. Peasach, succos, beggining of the summer. And the flights are packed with bouchrim. They all are trying to pull their "shtick" so they are makpid on 1 carry on.
i was one of those bouchrim, and managed to get 2 suitcase 1weiging 65 lb, and my carry on 70 lb (all the heavy seforim, and shuirim
yeh right), and 2 big boxes of matzah.
the trick, leave ur hand luggage behind while you check in, that way it isnt weighed, and they don't know how many pcs you have.
if they stop u by the gate - the agent said i can take it.
when you get to the plane you send it underneath for free!
THIS WORKS EVERYTIME!
I have taken 3 carry ons for free many times!
good luck