I gotta say posts like this I find.....ridiculous. I can understand getting upset about a game but first of all you need to cool off a bit man before posting.
Secondly the game tells you several times near the beginning of the game not to wait till the last second to do the Palaces because shit can go down. They all but hold your hand with the amount of times its mentioned.
As for sending the calling card before you go into the dungeon, the game explains why you can't do that either.
If you don't like the mechanics that is fine, but calling the game bad simply because you weren't paying attention to the games MANY cues is your fault, not theirs. I'm getting real tired of childish posts like this lately.
Sorry I did pay attention. Sure the game gave warning but not ONCE did it ever tell me that I needed a full day to drop a calling card and another to steal his heart UNTIL I was literally standing in front of it and Morgana than explained it. That was the first time I knew of calling cards, the time it took and needing to materialise the heart.
Also I started the infiltration on the 30th. The game told me 2 days. Is that not 2 days? How was i supposed to know that as of may 2nd i could not do anything at all and its instant game over.
Regardless of what you think for first timers such as myself it was all very poorly explained or not explained at all.
I admit I needed to cool off but when you lose 5 hours progress you are upset. I have since cooled off and am back in it playing but regardless, even if I go on and play for another 100 hours and love the game, there is no doubting that it is very poorly explained and a bad game mechanic.