When it breaks, you can call/email someone to look at it. Factor in the cost of having someone on retainer or hiring a person that has experience with hosting ES.
Hahaha... that's not how AWS works (unless you pay them hundreds of thousands to millions of dollars a month). Amazon is terrifically unresponsive even for medium-to-large clients.
If you have business support (10% of total a month / $100 minimum I think) or better that is how it works, except you have to wait hours sometimes and it's very slow to work with the Amazon reps. Also, always make requests urgent, otherwise you'll never get a rep.
You just need to pay premium support, which is < 100$ a mo I believe. They reply within a day, but to satisfaction in our experience.
Might not suffice for all use case but thought I'd share it's not totally bad for small companies.
If you are not getting the kind of support with premium or enterprise support, you better talk to your TAM. We run into problems with Redshift all the time and they are quite responsive (well they do violate their SLA often and we are too nice to deal with that right now). But of course you can't get a hold of the developers until support can't do anything else.
Call and/or email Amazon support to fix ES issues?