The Bible presents several big ideas that it then gives much attention to . . . including the ideas of light & darkness, parts & the whole, and struggle & rest. How God made this world to be & function and how He introduces & accomplishes redemption present these ideas again and again to inform us of who God is and what He is like, and I think they also give us a bit of a preview of what paradise will be like.
We certainly don't know detailed particulars of what exactly to expect, I personally think that the texts referencing streets of gold winding through a city like transparent glass are speaking of the glory and majesty of God's eternal heaven and not asserting what actual materials we will find there, while the texts that talk about lions lying down with lambs is presenting factual circumstances - I believe heaven will be paradise restored, the garden and God originally made it before man corrupted it.
Whatever the case we do know that those big ideas presented again and again in the Bible will finally be realized in some manner along the lines of;
There will be no more darkness and the light will be beautiful and endless,
Love, the perfect bond of unity, will bind us all together with one another and with God, in a manner in which we each remain the person that we are (in an even more fuller sense) as we are one with all.
And all struggle will end and we will enjoy a vigorous rest. The Bible is clear on this; for all those who know Jesus now, who love Him in this life, and who trust Him as their only hope of heaven, heaven will be real and never-ending and a perfect rest and peace and joy in the love of God.
I believe that when we close our eyes in death and open them again in the next life, all those trusting in Jesus alone, not in themselves and not in religion and not in being good enough, etc, but trusting fully in His finished work, will instantly stand face-to-face with Jesus and He will put His thumb to our cheek and wipe the last tear from our eye - and we will rest with Him in eternity.