People need opinions,I will to Amsterdam in the New Year and im go camping what do you thinK?

I will to Amsterdam in the New Year and im go camping because I dont want to spend money in hotels, I'm undecided if I should go on Wednesday and back Monday or if i should go on Thursday and back Monday ,what do you thinK?And about the tent and sleeping bag ,do you know any to buy in Argos?They must be hot because of cold weather .Im going to camp in the Zeeburg park