Tips for money saving things to do in Spain on holiday in August?

We’re going for 3 weeks, so I want some days where we don't spend a lot.
We’ve 2 children aged 11 and 8.

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Answer:
I live 2 minutes from Almoradi and there are a few things to keep the children entertained… You’re only 20 minutes from the beach when in spain do as the spanish do take lunch and drinks in a cooler with u.
In quesada (a-7 towards Torrevieja Norte) there’s an aqua park its the cheapest 1 around and not to massive that the kids can just wonder off…
Also in quesada there’s a bar where you can have a drink and rest but upstairs there is a play-area for children (ball pit and soft equipment).
OK the drive to Barcelona might be quiet high-priced as its about 550km from here to Barcelona. If you’re coming back then it might be worth getting the train from San Isidro.
You will only be an hour from Benidorm and its well worth a trip to terra mitica, terra natura or the water park.

The Almoradi market on a saturday is worth going to, to get all you fruit and veg and prezzies for the children to take back…

In San isidro (take exit 733 off A7 follow signs) there is a fresh water pool that you pay a few €s for the day.

If you need any more info mail me i will be happy to help

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Answer:
rent an apartment as apposed to staying in a hotel and purchase local produce to cook. the fruit and veg is very fresh. buy from locals rathers than the pakistani's even though they maybe cheaper as they don’t keep the spanish tranditions of closing for siesta and sundays.

there are lots of natural parks to walk through in spain and some are really beautiful.

the person above is right, you haven't provided enough info.

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Answer:
You didn't state whether you're going self catering, all inclusive, half board etc. also, if you put where you were going people may know some cheap/free days out..fun for all the family…

I'll come back soon & try to help once more information is given.