A little from the word and a lot of seculation.
So it is said there is no pain, no tears, only joy.
We will see are family and friends, etc. Or not!
So what happens when some of them have gone the other way?
No sorrow or tears, remember?
Paul said he went there in a vision - and saw many things but would not say what he saw -- 2 Cor 12:1-7.
Prophets in more modern times have also been taken to heaven in vision and recorded what they saw -
https://egwwritings-a.akamaihd.net/pdf/en_EW.pdf
That is a book that contains in one chapter - an example of the author taken to heaven in vision and then from there visited some planet in another solar system of who knows what galaxy -
God’s Love for His People[39]
...
There is perfect order and harmony in the Holy City. All the
angels that are commissioned to visit the earth hold a golden card,
which they present to the angels at the gates of the city as they pass
in and out. Heaven is a good place. I long to be there and behold
my lovely Jesus, who gave His life for me, and be changed into His
glorious image. Oh, for language to express the glory of the bright
world to come! I thirst for the living streams that make glad the city
of our God.
The Lord has given me a view of other worlds. Wings were
given me, and an angel attended me from the city to a place that was
bright and glorious. The grass of the place was living green, and
the birds there warbled a sweet song. The inhabitants of the place
were of all sizes; they were noble, majestic, and lovely. They bore
the express image of Jesus, and their countenances beamed with
holy joy, expressive of the freedom and happiness of the place.
I asked one of them why they were so much more lovely than those
on the earth. The reply was, “We have lived in strict obedience to the
commandments of God, and have not fallen by disobedience, like
those on the earth.”
Then I saw two trees, one looked much like the tree of life in the city.
The fruit of both looked beautiful, but of one
they could not eat. They had power to eat of both, but were forbidden
to eat of one. Then my attending angel said to me, “None in this
place have tasted of the forbidden tree; but if they should eat, they
would fall.”
Then I was taken to a world which had seven moons.
There I saw good old Enoch, who had been translated. On his right
arm he bore a glorious palm, and on each leaf was written “Victory.”
Around his head was a dazzling white wreath, and leaves on the
wreath, and in the middle of each leaf was written “Purity,” and
around the wreath were stones of various colors, that shone brighter
than the stars, and cast a reflection upon the letters and magnified
them. On the back part of his head was a bow that confined the
wreath, and upon the bow was written “Holiness.” Above the wreath
was a lovely crown that shone brighter than the sun. I asked him
if this was the place he was taken to from the earth. He said, “It
is not; the city is my home, and I have come to visit this place.”
He moved about the place as if perfectly at home.
I begged of my attending angel to let me remain in that place. I could not bear the
thought of coming back to this dark world again. Then the angel said,
You must go back, and if you are faithful, you, with the 144,000,
shall have the privilege of visiting all the worlds and viewing the
handiwork of God.”