Hi Hayley,
I really, really wouldn’t risk going on the sunbeds for at LEAST a week pre-op (two if you can).
The reason is because (even if your skin is very used to the beds and you use moisturizer regularly) the chances of stretch marks and skin discoloration is greatly increased due to the damage and dryness of the skin after exposed to UV. The recommendation is there to ensure your skin is as supple as possible pre-op to make sure it can stretch sufficiently for your implant.
It won’t happen to everyone, as everyone’s skin is different, but you’ll be really upset if you could have avoided complications just by staying off the beds.
I am an avid sunbed user and was dreading the long stretch without them, but to be honest it’s the best time of year to relax your tan a little and I haven’t really noticed with everything else going on(!). So I would strongly advise you to take the advice :).
Good luck beautiful xxx