No. In fact, family plans are great for this! With a family plan, you can add up to 5 unique child profiles (each with their own login and character) to your account.
Then, each child can use their unique username and password to login from their own homes and devices, even if they are in separate families or locations!
If you have more than five kids or grandkids, you could always purchase more than one family plan - you'll just need to use a different email address to manage each account. Or, contact our team to learn more about group options, which allow you to add up to 25 kids to one account!