Arthur believed this was a dream created from the moment he obtained his legacy. However, the food tasted the same, and the conversation was the same despite a few differences, depending on how he interacted with the rest.
Juan didn't mock him as much, simply because Arthur carried an aura and expression that didn't fit a porter. Yuran still tried to make a friend of him, which Arthur returned with a smile as he tried to wrap his head around this.
If the reawakening of the legacy brought him here, it needed to be for a reason. Arthur didn't know what that was, but he guessed that something needed to change this time for the legacy to awaken.