Yes! If you ran out of guest hours for your current cycle, you have a couple options:
You can continue checking in a guest like you normally would for $6/hr (or equivalent currency). Your payment will be processed after your guest is checked out.
You can buy a pack of guest hours from your account settings.
If you are on the Explorer Membership or the Creator Membership, you can upgrade to a higher membership tier in your account settings, which will start a new cycle with included guest hours.