connection to ix

How do i remotely connect to an ix?
In the en. speaking caribbean we have probably six to eight small national
ixps. I want to be present at all of them, & its been suggested i can make
some cost savings by remote connection using mpls. Is this a viable
option? Is there a disadvantage in doing this? Thx.


Sure, plenty of people use such service.

If you have much traffic, you'll rely on one dedicated port for each IX, and maybe one full 10G wave or more toward each one (so the remote service is only transport, you have your own port at each IX).

If not, you'll use ethernet over MPLS service for remote peering, provided by guys like IX-Reach, who will provide you shared bandwidth over their own connection at each IX, delivered on one single port (or more) toward you.
It's shared bandwidth, so you must trust the provider network, in case of DDoS on its ports your traffic will be at risk, you don't see if the remote port is down.
But the price can be quite more interesting, you don't have to deal with the remote physical interco, and so on.

Now, you have to find someone providing remote peering to the IXs you want, to check the price...

I doubt you're going to find IX-specific services among Caribbean islands. I also doubt that there is 10G wave-level of capacity needs to each IX, given that AMS-IX Caribbean has a peak of 19 Gb/s.

Finding someone that does Carrier Ethernet or VPLS services to do aggregation would be the best hope, but even that is limited given the limited carrier selection in the Caribbean.