I have the link for the Budget pre-registration site, which, I believe, will allow me to bypass the counters at the Airport and go directly to the Budget parking garage. My question is, how do I use the Budget pre-registration site if I have not already paid online for my car hire. The main Budget site does not allow me to pay for car hire online, it only gives the option to pay at the rental desk on arrival. Queueing for the rental desk is precisely what I'm trying to avoid! Any help or advice would be appreciated.