We often do a similar thing to Jimbo, we have a good breakfast, then take something from the bakery, also pick up fruit (maybe a quarter melon or bananas) & cold water from Margarita's Supermarket, or in fact any other supermarket, depending which way you walk to the beach.
If you stay at a pool, they generally do not like you to eat anything not bought at that venue - which is pretty fair!!
I see that swedebasher has pointed out that you cannot swing your meat (products) on the beach, so that's Don out then!! Jimbo's safe - - me too!!
or did I read that wrong?? LOL (then he said - - but we all do!!).