Difference in daily cost in different seasons?

Interesting question that came up on the forum the other day. 

antique bills business cash
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Is there a difference in the cost pr. day if I go in May vs if I go in September?
Or will the cost (accommedation, food etc.) be more or less the same in these 2 periods?

Read more on Difference in daily cost in different seasons? here on the forum.