You will be limited to 15 NFTs for voting on the Tribeca page. If you have more than 15 Marinade NFTs, Tribeca will sort them through numerical/alphabetical order and only consider the first 15 NFTs. The sorting will be applied on the Token Address of the NFT (available on Solscan) and will be done by numbers first, then letters. So "1", "z", "a", "0" would be sorted to "0", "1", "a", "zβ (taking into account the first character of the Token Address).