IMPORTANT!: Neopets is currently making changes to premium and as a result no sign-ups are currently avaliable. This means that if you do not already have premium, you must wait until sign-ups open again to join.
Neopets Premium is the paid service of neopets. If you pay for neopets you will be able to get extra features on the site. This page will give you an overview of these features, so you can make a solid decision of wether this service would be worth paying for to you.
You are allowed to have one of your side accounts as your alias accounts. What this does is that you'll be able to use your portal and other premium features such as having no ads on your side account. Your side account will also receive its own firstname.lastname@example.org e-mail address. If you want to list your side account as your alias account you can go here: Admin Alias.
If you're having trouble entering your side account as your alias account, because it keeps saying the password is wrong, while it is not, then that means your password is too long. This is an unfortunate glitch on neopets premium. If you'd still like to add it you could change the password of your side account to something short for a few minutes, add it as your alias, and change it back later.
Please note that you can only enter a side account as your alias, this is an account you do not earn neopoints or items on! If you enter your sibling's or friend's account as your alias, you'll both get frozen for earning money on multiple accounts.
This rule is only for alias accounts, if you have the neopets dial up service you'll be able to add sub-accounts, these are not side accounts, but real accounts for your family members, on which they can also earn neopoints.