The FF staple "desert prison" sections tend to suck. Places I wish I could skip in each one:

FFVII: The desert prison
FFVIII: The desert prison and the sewers
FFIX: The desert prison

And then they kinda stopped doing them I guess, phew.

FFX: The Calm Lands and Macalania
FFX-2: The Calm Lands and Macalania

FFXII: That great big massive desert type place you have to go through to get to the other end of the world, with the sort of maze of circular structures? And the sewers. Unfortunately combined those seem to make up 90% of the game.

FFXIII: That never-ending foresty place which you have to slog through and just goes on and on with little to no advancement in the story, I think it's when it's just Lightning and Hope, and it's a little bit reminiscent of FFX's Macalania.