Good news and bad news. Good news is the "Quest Packs" is free just by entering in the code - https://www.lotro.com/en/getready.

Bad news is that the "expansions" are a little harder to figure out. You can go here to check out your account: https://myaccount.standingstonegames.com

But please be aware that only the expansions you bought through the Lotro Market (with cash) will be listed.