Hi Ann,
The age range for this departure is currently between mid-50's and 80 years old.
In relation to mosquitos, you are travelling to a region where they are present. We therefore advise you to purchase mosquito repellent before your trip and apply this regularly during your holiday, including when you go to bed. We would also suggest that you take with you a ‘plug-in’ mosquito repellent device for your hotel room as an extra measure. These, along with DEET based repellents, are available from most pharmacies.
Kindest Regards,
Monty