Spoiler-----her tears
Clarkson's character comes close to tears at several points in this movie--
from frustration, anger, sense of loss, perhaps joy/recognition...
at the end...I have two different perceptions for why she cries in the taxi going to the pyramids with her husband--
one is the loss of possibility to continue the relationship with Tariq whom she certainly seemed to have been falling in love with and vice versa...at the least a strong attraction...
two is the relief/chagrin that she did not transgress and do anything overt that she will have cause to regret...
I favor ONE because that is the romantic/idyllic choice but realistically the odds favor TWO based on everything brought out about her past background and her relationship with her husband and family situation--and how she and Tariq definitely do not see eye-to-eye about certain conflicts/issues revealed in the story...
this woman talks a good game but she has been basically passive her entire married life--taking responsibility for raising her children alone, having a long-distance marriage with minimal contact and obviously no shared career status---
she has been around his other job postings but she had not really "lived" there because they raised their children in Canada and that was where her job was...
she has nothing to hold her back from making the choice to separate from her husband who has certainly placed duty over family for decades except her own choice--
there is no indication that when they finish viewing the pyramids that she will do anything except coexist with her husband once again--and on HIS terms just like before...
but while Tariq is mysterious, chivalrous, intelligent, gentle--he also is Muslim and that is a totally different kettle of fish than she is used to dealing with--he is not even a Western Muslim--
the conflict over the girl from the bus and the delivery of the letter
her attitudes about the social strata in Eqypt and his refusal to consider her point of view--
those just show that they could not exist in a "real world" situation as much as they might be attracted to each other...
Cairo Time just symbolizes a "what if" moment
she was bored, in an exotic location which was slightly hostile, where she needed a man to act as a buffer--she found one who was attractive, intelligent, humorous, attentive, and kind...don't we all wish for that...
"...That's the beauty of argument, Joey. If you argue correctly, you're never wrong..."