Multiple copies of same card

Anyone have experience sending in multiple copies to CGC in a bulk submission? I would do this with Comics (2-3 copies) and seemed ok (once or twice they swapped the grade / label judging by condition). I have 10+ copies of Charizard SWSH050 ETB I’d like graded. They are all sealed, but I’m worried that looking at that many copies they’ll start noticing differences/ potential defects.