Yes, please feel free to bring your little ones! Just be mindful of having supervision for them and just let me know if you plan on having them attend.
Although we do not have transportation provided, the fortunate thing about our venue is that the ceremony and reception are at the same location and a lot of the hotels nearby are walking distance to the ICONA Diamond Beach Resort.
The ceremony is one the beach so feel free to dress comfortably but it is tie optional. For the ladies, I would recommend mid length for dresses if you are going long dress route to avoid getting the dress in the sand :)