I don't think DC10 is anywhere near strict enough to cause issues like that from my personal experience. On the door, they are no stricter than any other club on the island - the search upon entry is non-existent. I think its more just a case of the fact that they actively walk around the dancefloor trying to catch you in the act for a bribe; whereas most other clubs are nowhere near as active in this regard. Still, there are no issues with going into the toilet and doing it, so just be sensible (at least until the garden shuts and the inside is dark and packed
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).
With Fabric it was the incredibly intense door searches which led to people taking too much before entering - and I can't see that ever being an issue in Ibiza.