Sources: 1, 2

From Chandler and Monica board
10-1: TOW the good news
air date: 25/9/03

So basically it started off with Monica, Chandler and Phoebe in M&C's
room (and remember they all have adjoining rooms and the walls are
thin) and they hear Ross & Charlie in one room and Joey & Rachel in
the other. This is a hilarious scene! Ross decided he couldn't do
anything with Charlie until he talks to Joey. So he went looking
for Joey. Rachel and Joey in the meantime continue to kiss until Ross knocked on the door. So Joey "hide" (again very funny) while Ross and Rachel talked. After Ross left, everyone came in to confronts Joey and Rachel - who ultimtely decided not to do anything until they talk to Ross.

In the meantime, Chandler had been making fun of Monica's big "weird" hair so she told him she was going to the salon before they
leave Barbados. So the next day, she came in with corn rows and
shells braided into her hair - of course Chandler freak out and she
talked about how cool the sounds of the shells hitting each other
are. And Chandler replies with "Entertainment for the eyes and
ears!" So everyone thought her hair looked awful but she liked it.

So then they were on the plane home...Ross sit with Charlie and Rachel with Joey (Phoebe & Mike and Chandler & Monica). Ross decided to talk to Joey, so he did. Joey gives Ross the green light to move forward with Charlie but of course didn't mention anything about Rachel, since Ross told him he's such a great person etc.). So when Rachel comes back to her seat, she told Joey she will have to tell Ross herself.

Phoebe and Mike "talk dirty" to each other - well Mike tried, but
wasn't very successful. It's very cute...but then he tells Phoebe he
had a girlfriend back in NY but promised to break up with her that
night.

They got back to NY. Rachel tries to tell Ross but since
he stole so much shampoo from the hotel, it spilled out all over
his suitcase...so Rachel couldn't tell him.

Phoebe was at Mike's apartment waiting for him to come home from the break-up but the girlfriend (named Precious) comes to the apartment looking for Mike. So Phoebe had to break-up with her for Mike. Phoebe convinced Precious (who she called Suzy) that she's too good for Mike so when Mike came home Precious slapped him and left...and Phoebe told him he's welcome!

Chandler finally told Monica he hates her hair..and she said she
didn't care because she likes it and he's just jealous. Then when
she goes to take a shower, when she was dancing around in the
bathroom (off camera) her hair got caught on the shower rod, so
Chandler had to free her.

Rachel decided that she will talk to Ross in the morning
about it. Joey pointed out that she can say I'm sorry in a girlie
voice and use her breast cleave to help get through the talk with
Ross. They decided to do "nothing" untill then but after kissing
goodnight on the lips they started making out.. Ross walks in and
Rachel pushed her breast together and say's I'm sorry in a girlie
voice.

---

From FriendsCafe
The very first episode of Season 10 will be called The One With The Good News. After Season 9's ending, you find Rachel confessing she still loves Ross and he overhears it. This causes Joey to leave Barbedos early. Later, they end up in Monica and Chandler's apartment and Ross talks to Rachel in private to tell her that he still has feelings for her. Joey shows up and he is selling his apartment and moving on. As he puts a "for rent" sign on the door, Chandler runs into him. They talk but Joey leaves. Chandler brakes the news to the rest in the apartment and Rachel runs out to try and catch Joey. Rachel convices him to say goodbye to them all so she drags him back to the apartment. All are in the room except for Monica who is in the bathroom. Joey starts to say goodbye and they all dont want him to go, obviously. As he heads to the door, Monica burst out of the bathroom with a pregancy kit in her hand and shouts that she's pregnant. They all go to congratulate her, including Joey. She looks like she is going to faint so they rush to grab her, but instead Chandler fainths and hits the floor.

Source #1

TOW The Barbados: Ross has a major speech on the island so they are go including Charlie and David. The first part is about Phoebe/David/Mike. David is about to ask Phoebe to marry her but Mike shows up and Phoebe hooks back up with Mike. Also Chandler erase Ross's speech and they have to rewrite a new one. It is raining the whole time and Joey is having a bad time. Also Monica and company tries to keep Rachel from telling Joey about her feelings.

The second part starts with Ross's speech. Chandler/Monica/Mike/Phoebe have a ping-pong tourament and it comes down to Monica/Mike. It is 41-41 but Monica hurts her wrist and Chandler takes over for here.
Meanwhile Joey and Charlie break up. Joey ends up in Rachel's room and she tells him about her feelings but Joey says nothing could happened because Ross is his best friend. Meanwhile Ross tells Charlie about his feelings for her and they kiss. Joey walks out of Rachel's room and sees this. He seems to turn to head back into Rachel's room for the cliffhanger.
Thanks to Paul8148 for the spoilers