So, Vitya, let's get your application more specific.

I checked the website – the room rates are the same as in Volgograd, around 3500 per night for a double room (including breakfast). Regarding the conference hall, there will be individual agreements in both places, but I think the prices will be roughly the same. As for the food, there probably won't be any significant differences.

As for entertainment, I don't know, but it's not included in the minimum package, so it doesn't matter.

2. Korolev is 25 km from the center of Moscow + there are constant commuter trains. So, it will be quite convenient to take tourist trips. But with the resorts, whether in Yekaterinburg or Volgograd, it's hard to get out.

It takes about 2 hours to get to Moscow (walking to the bus, bus to the train, train to Moscow), if I remember correctly. So, it makes sense to plan day trips.