Grenada is not a cheap holiday destination. The cost of living is fairly high, comparable to the US. Although Grenada has its own currency (Eastern Caribbean dollar: EC$ or XCD), it is pegged to the USD. Often, an 18% tax is added to hotel and restaurant bills: 10% service tax and 8% state tax. If not automatically charged, the value of the service tax is expected from tipping.
When it comes to driving and language, the British were favoured over the Spanish and French, which means that the official language is English and driving is on the LEFT-side of the road. Having said that, locals also speak French-African.
The journey to Carriacou is a short 20 minutes ride by air or 2 hours by sea.
Noteworthy is also that water from the tap is safe to drink.