Another 3000 Gil had to be spent to enter the Golden Saucer. The party should really work on getting that 30 000 and buying a lifetime ticket. Dio really didn’t have much issue with giving away the keystone. The only thing he asked for in return was for Cloud to “entertain” him in the battle arena. The battle was short and not at all entertaining, though. Cloud managed to lose from the very first monster, who got lucky with an instant death spell.
As they were ready to return to their rooms, Cloud and Aeris spotted Cait Sith carrying the keystone. As he noticed them, he instantly started running. Cloud suspected there was a Shinra spy in their party for a long time now, so it now became obvious what Cait Sith was all about. After a lengthy chase through the various areas of the Saucer, Cloud and Aeris finally managed to corner him at the Chocobo Square, but not before he gave away the key to the Shinra.With the keystone in their possession, the party was ready to leave, but sadly, the tram was broken, so they were forced to spend the night at the Saucer. Due to the issues with the tram, all of the events were free for the night, so Aeris woke up Cloud in the middle of the night to take him on a “date”. It was a fun night for Cloud and he even managed to learn something new about the girl. She used to have a boyfriend who was in SOLDIER. His name was Zack and Cloud reminded her of him for some reason. This was also probably the same Zack the people in Gongaga are looking for.
Cait Sith had nothing to hide now. His body is just one of many, as would be expected of a fortune telling machine. It’s being controlled from Shinra Headquarters, by an unknown person, and destroying this copy would simply activate the backup. The person controlling him is a Turk and has taken Marlene hostage just in case this happens. Cloud and Aeris are forced to hide the fact Cait Sith is a spy and keep him with the party if they want to keep Marlene safe. It wasn’t all bad, though. Cait Sith seemed reluctant to use Marlene as leverage and admitted he is starting to see things differently from Shinra, now that he’s been with the group.
In any case, there was nothing to be done but move on. Whichever side has the keystone, their next step would be to open the temple, so that’s where Cloud decided to go next, keystone or no.