This is probably a really stupid question but I could use some help. I am taking my daughter to Ibiza in June, she will be 19 months old. I am sure that she will be in and out of the pool/sea a lot but am not sure what kind of nappies i should be using. In this country we use swim nappies but this could work out very expensive on holiday. Are there costumes with built in nappies? How do they work? Won't they just get soiled? Thanks for any help.