Board Thread:Wiki-Related Discussion/@comment-25926288-20171222172845/@comment-2153169-20171222173840

Based on.

The only thing they don't have from these characters are the names. That's all.

What is the same:
 * Storyline of the episode
 * Multiple Locations (Edge of Realms, their House, etc...)
 * Multiple Items (the Travel book, their chairs, etc...)
 * Music
 * Scenography
 * Parallels
 * Atmosphere
 * Editing
 * More important: themes. They're the same ones. Love, acceptance, grief, moving on, etc...
 * Side characters. Gideon/Unborn child. Alice/Tilly being Rumple's Russell, his guide to acceptance and to his next adventure.

And, of course, the multiple interviews by the actors AND the writers, confirming everything is directly taken from Up.

So, no. I don't agree with you when you say there is a lack of significant determinants. The only real lack are the characters' names. The rest is there ^^