Firstly, what has marriage got to do with the dress code at the Aqua Park?
Secondly, you make it appear that 'Ur ppl' - I take it you mean UK citizens - are somehow out of step with the rest of the world, and that Islamic value countries are numerous; Fact- non-Muslims make up 80% of the worlds population.
And please tell me how many Islamic value countries decide to have a dress code forbidding normal swimming costumes in an Aqua Park?
Your position is in a infinitesimally small percentage in the World, a very small percentage in the Islamic World, a minority in Qatar and, I dare say, a minority amongst Qataris themselves. You are out numbered hugely.