If you do not face a delay 40 mins should be fine as you can check in at AMS for the return leg as well. Will you return with the last flight of the day? If you miss the return they will try to route you via 1. GOT, 2. ARN or 3. FRA if no more direct flights.
It is a short hop but food will be three course (nothing extra fancy) and full bar service of course. Do not expect anything seating wise. They will block the middle seat for you if three in a row (right hand side on the MD), but no inseat power. If a Boeing 737 seats in C are adjusted to gain some width. But on MD83 they do not do that, just a curtain between Y+ and C.