I have been trying to buy but my btc payment has been pending for 20 hours now.

It's a pc

Hello, I found 2 old Bitcoin multibit wallets I had on a computer but the problem is they are both password protected. I did write the passwords down but now can't find where I wrote them. I do remember that the passwords wasn't words, it was a load of random characters and numbers so I wouldn't be able to guess them. Is there anyway I could recover the Bitcoins in the wallets? I still have the wallets backups and .key backups, is there anything I can do with them?