Revelation reveals if we die in Christ we will be crowned and seated on thrones. For those who do not die in Christ (Non Christians), will they be crowned in the same glory?
In the Gospel of John, Jesus answers Nicodemus's question regarding the attainment of the Kingdom of God with, "Amen, amen, I say to you, no one can enter the kingdom of God without being born of water and Spirit." (Jn 3:5) As Catholics, we affirm that Baptism is necessary for salvation, for through our Baptism we are immersed into the death of Christ and rise with him as a "new creature" (2 Corinthians 5:17) -a creature "reborn of water and the Spirit.'"(CCC1257) The Catechism goes on to explain that God has bound salvation to the sacrament of Baptism, but he himself is not bound by his sacraments. Thus, Baptism is necessary for salvation; however, since Christ died for the salvation of all, there are those who can be saved without Baptism. Catechumens, those who strive to do God's will without ever knowing Jesus Christ, and those without the knowledge about the faith or to whom the Gospel has never been proclaimed are such examples. (CCC 1260)
The Council Fathers of Vatican II do not exclude anyone acting in good faith from the possibility of salvation. In the Dogmatic Constitution on the Church (Lumen Gentium), paragraph 16 the Council Fathers wrote:
"Nor is God remote from those who in shadows and images seek the unknown God, since he gives to all men life and breath and all things (cf. Acts 17:25-28), and since the Savior wills all men to be saved (cf. 1 Timothy 2:4). Those who, through no fault of their own, do not know the Gospel of Christ or his Church, but who nevertheless seek God with a sincere heart, and moved by grace, try in their actions to do his will as they know it through dictates of their conscience'those too, may achieve eternal salvation.
"Nor shall divine providence deny the assistance necessary for salvation to those who, without any fault of theirs, have not yet arrived at an explicit knowledge of God, and who, not without grace, strive to lead a good life."
That said, we must remember that just being Christian does not earn us our way into heaven. (Rom 3:20) "Salvation is the free gift of God through Jesus Christ (Eph 2:8-9; Rom 3:24-25; 6:23; CCC 161-169) but, we must accept and freely cooperate with this gift. (Phil 2:12-13; Gal 5:6; CCC1949)" For the reason that salvation is a gift, so too is Baptism a gift as it is conferred upon those who bring nothing of their own. In fact, St. Gregory of Nazianzus referred to Baptism as "God's most beautiful and magnificent gift." (Oratio 40, 3-4; PG 36,361C) Ultimately, we can only entrust the souls of those who die without the gift of Baptism (those who do not die in Christ) to the mercy of God (CCC 1261) remembering, that God's mercy is infinite and cannot be bound by human limitations.
References: Lumen Gentium; Second Vatican Council, Nov. 21, 1964; Catechism of the Catholic Church; Did Adam and Eve have Belly Buttons? And Did Jesus Have a Last Name? Matthew Pinto & Jason Evert; www.americancatholic.com