By the way, Korolev looks very interesting. 1. No CIS events have been held in Korolev (Moscow). 2. Korolev is located 25 km from the center of Moscow, and there are regular commuter trains. This means it will be quite convenient to take tourist trips. But it's hard to get out from the resorts in Yekaterinburg or Volgograd. 3. Financial aspect. I understand that Korolev will be financially somewhere in between Yekaterinburg and Volgograd. Yekaterinburg is estimated at 17-19, Volgograd at 23-25, so if Korolev is, say, 19-21. In total, for example, for me, the situation is as follows: Volgograd: 25k for accommodation + 15k for tickets - a total of at least 40k without drinks. Korolev: 21k for accommodation + 6k for tickets (although Mee says that there are even tickets for 3k round trip) - a total of 27k without drinks, which is a much more pleasant amount. 4. If Vitya takes Merlin as the host, then he won't have to pay for his tickets to Korolev, which saves about 8k, which can, for example, be used to pay for the conference room. So, Vitya, let's make your application more specific. Going to Korolev seems much more realistic to me than going to Volgograd.