Saw this in London at JW3 and absolutely loved it.
The young couple from Paris leave their baby with the Grandparents to go on pilgrimage to Poland. Despite it being his family's ceremony, his wife who also has Polish descendents is more fired up. The comedy relationship between them is very well drawn, but the serous parts filmed on location are moving and respectful.
I disagree that it is disrespectful to the Poles, but it does show aspects of the commercialization of The Holocaust which I have also experienced in Germany and the feelings, hard to repress, if your family were affected by WW2 and you visit the areas affected even 2 generations on.
Also the Secrets and Lies passed down the generations.
Do catch it if you can.