I know you've probably gotten ten posts by now that "they're really not dead", but I wonder if this is as big in the EOC? I know they aren't as militant about adoring Mary.
Those saints in heaven - except for Enoch & Elijah - have died the first death. That’s what’s meant by the reference to “praying to dead human beings”. Saints in heaven are alive in spirit, awaiting the glorious resurrection of their new bodies.
Ping some Orthodox and find out. I think you'll be surprised at teh level of devotion they have , and rightly so, to the great Panhagia.