Why do you place the Wedding Feast of the Lamb in Heaven? The 5 wise virgins are clearly asked to join the feast after the 2nd Coming. Couple of more parables state that Israel needs to be watchful & prepared for when the Bridegroom is on His way to His Wedding Feast (only possible at 2nd Coming). Rev 19 just says that those invited are blessed. This is the only way the OT/Trib Saints could participate and thus be blessed.
Rev. 19 is the prophetic account of actual events to come. In the order of the chapter, the wedding supper of the Lamb (Rev. 19:6-9) precedes the Lord’s return to Earth (Rev. 19:11-16).
Parables are earthly stories that symbolize heavenly truth. In the Parable of the 10 Virgins (Matt. 25:1-13) the wedding banquet is symbolic of the Millennial Kingdom, which follows the 2nd Coming. The lesson of the parable is that those who survive the Great Tribulation but are not believers when the Lord returns (no oil) will be excluded from the Millennial Kingdom.