I would imagine they will although they'll probably ask for 24 hours notice. Best check with your hotel.

You might be best checking on the port aventura Q & A's section, as I have heard that the theme park do not allow you to take these picnic boxes in.

Otherwise, the Villamarina does picnic boxes. Order them by about 7 the night before and pick them up at breakfast time.

We took food in daily in bags, rolls, crips, cakes etc, had no problem with us carrying it in.

The theme park probably dont like it as they would want you to buy their food etc. But last August I must have walked through those turnstiles 7 or 8 times and I never saw them check inside anyones rucksacks or bags.