A couple of things to note, unless things have changed since a couple of weeks back.
Do not arrive just after the scheduled Let410 from IOM. You will not be allowed to enter the security office until the Let has taxied for departure. This can take an hour from arrival to departure. You will be told to stay in your aircraft. If you have arrived before the Let, no problem, but if you want to depart while it is on the ground, you cannot. You are held in the security office until the Let taxies out. Madness, and all about a tiny area outside the security office that is called a "Critical Area" apparently.
The second point is that you need to book out by telephone from the security office, and if you are likely to leave after 1500, you must book out before 1500 the same day.
Otherwise, it's a nice airfield and a pleasant walk to the beachfront area for an ice cream. No food on the airport, but you can make a cup of tea or coffee in the pilots' lounge by the security office. It's free! If you want food, the Premier Inn is right outside and has a restaurant.