A park and ride service is located in Nant Peris, which is between Llanberis and Pen Y Pass. Parking is free. The bus to Pen Y Pass costs £1.50 each way.
The Summit cafe is under reconstruction and is closed until 2008. Restrictions apply to the train service.
http://www.hightrek.co.uk/snowdonia/summit.htm
Thanks for your comment, this page has now been adopted. The Snowdon Mountain Railway now only runs as far as the Clogwyn Station and then only from late spring to early autumn.