That's why it's important that you should be careful and consider things, like on this scenario, definitely the casino might receive a notification or warning that a player from restricted country tried to access the site, they might tag your account as suspicious and therefore even though you told them you were on vacation, the only things to prove it is to submit your KYC, it's also important to know if they do allow VPN since most sites I know doesn't allow that since many users from restricted country tries to access their site which is against their ToS.
Papabet doesn't allow VPNs and does not ask for KYC. So, it has to rely on its own technology to determine whether a user is using its platform from a restricted region or a VPN. We don't know much about the technology a casino or a sportsbook may use. They may have some ways to detect if a player is using a VPN or accessing the website from a restricted region.
Since Papabet said they won't ban any players, it would be interesting to hear how they would handle players from a restricted region. I assume they mean no ban when it comes to betting patterns and behaviour.