Let me comment on your use of the word "wrath" in Revelation 11:18. Firstly, the use of the word "wrath" in that verse is not the first occurrence of this word in Revelation. Secondly, a subsequent use of the word "wrath" refers to the seven last plagues (bowl judgments), which will complete God's wrath (Revelation 15:1); however, the trumpet judgments will be the initial phase of His wrath.
The first usage of the word "wrath" is in Revelation 6:16,17, at which time the wrath of God will be clearly imminent to those on the earth. This will be known to them soon after the opening of the Sixth Seal (Revelation 6:12,13), which directly parallels Jesus' description in His Olivet Discourse (Matthew 24:29). Jesus described the (unbelieving) nations of the earth as mourning (24:30), which I believe will be intense regret that they are about to be left behind to face the wrath of God.
After writing about the Sixth Seal events, John briefly described how the 144,000 Israelites will be sealed for protection. This is followed immediately by his observation of the "great multitude that no one could count, from every nation, tribe, people and language, standing before the throne and in front of the Lamb" (Revelation 7:9). Here is a picture of the raptured saints in front of the Lamb (Jesus), seated on His throne.