Hello @ all.
I 'd really appreciate any suggestions, as it would be for this:
An all-day beach Cafe-Bar-Restaurant like in the picture below, lies in front of an over-crowded beach. The cafe is about 50-55 meters long and the width is about 20-30 meters.

In summer time, it is expected to host about 500 connections (on peak time). I should propose a model to provide internet access to all these people, inside the red area. The store already has two 15/1 Mbps stable cable connections. Also an RB2011 is available from the owner, by previous attempts.
I’m trying to figure out on:
- What kind of APs are needed? The space is narrow and 500 mobile devices is a respectable number.
- Position suggestions. On-sand installation should be avoided.
- Any thought.