ruins tour?? Small children

[PMMF]

HI--we will be stopping in Belize on Navigator of the Seas, I beleive the date is Feb 26th, my son is interested in seeing the ruins, I do not want us to separate in this port, we a party of 4 adults, my husband, son, his wife and myself and 2 young children, ages 5 and 15 months. I have been in email contact with Coralbreeze tours, say they will ajdust tour time to accomadate. Any info on this, would be appreciated. I understand its like an hour to get there, would like to spend an hour there and back. This way we will get to see a bit of the country, he gets to see the ruins.

The previous day we have a beach day planned in Cozumel and a tour of the city. I am fortunate to have a cousin who lives in Cozumel.

Do they use car seats in Belize for baby????