We came to Morfa Bychan by Porthmadog on Good Friday 18th April 2003.  This site is really basic with portakabin facilities but is only 5 a night so no complaints from us.  No electricity but this doesn't matter as there is easy walking to the beach!  You can park where you like and there is a mixture of tents, caravans and motorhomes.  You can also turn up when you like which we did at about 7.20 - they will squeeze you in!  It is really relaxed as a site - no rules that I could see and there were a fair amount of rubbish bins.