Прекрасная територия, но персонал просто ужас Great area but terrible staff

Was in this hotel on a business trip. There was a very unpleasant situation with the restaurant. I am allergic to mustard and at every meal I had to tell the waiter about it and ask if there was any in the sauce somewhere. The waiters simply do not know what is served on the table, they do not know what is included in the dish and sauces. The point was that on the last day the company I work for and which brought us to Edem (80 people) organized a gala dinner for all its employees. It was held not where there were breakfasts and dinners, but in a luxurious restaurant, which is located on the opposite side of the hotel itself. The hall itself is super, everything is fine. Each table had its own waiter. They began to serve dishes, the waiters took out, for example, a salad, and approached everyone and put them on a plate. This happened with all subsequent dishes. I immediately warned the waiter that I was allergic to mustard and then asked again 3 more times if it was in this or that dish that she served. At first she didn’t know, she went to clarify, then most likely she just scored. There was mustard in one of the dishes, I already understood this after I felt sick. I asked for an antihistamine, which was simply not available in the entire huge restaurant... I asked the waitress to call a transfer to take me across the lake back to the hotel. After waiting 10 minutes, I realized that I would not wait for anything and, having already begun to swell on my face, I ran on foot in a frost of -10, in shoes to the hotel and took all the necessary measures myself. So, the question is: why don't the waiters know what is included in the dishes? Why was there NOTHING anti-allergic, at least elementary, in the whole restaurant?
First, at a gala dinner, the waitress practically doused the employee from the plate with the remnants of the juice from under the dish, then she dropped a pancake with sauce on another girl, and then finished off me too. HOW can three of 10 people sitting at the table ruin the evening? Leadership take care of preparing not only the premises and dishes, but also your staff.