The problem I find with dehumidifiers is that you have to get one that can do the job so you need to spend a little money and they all come with a downside in that they are either noisy as feck, or produce heat as a by product.
I opted for the later and went with a Desiccant Dehumidifier which has a constant drain pipe (very important)
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As my Groom is above my bed sound was more of a factor than heat, BUT the downside is that it kicks out a shit load of heat (this has obviously been a problem recently - but I would imagine for the rest of the year not so much). Size wise it is not too bad in the location I have it which is facing backwards in the tent hanging from the beams:-

as my tent is pretty much limited on one side due to the way the loft beams split the tent in half.
It's kinda planned out so that the dehumidifier draws in air from the front & blows the hot air up the side of the tent where hopefully extracted.
Not really sure if there are any hacks to decrease humidity other than using air flow or biting the bullet and getting yourself a decent dehumidifier (or an air conditioner if you really want to go for it).
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