Poor Phoebe never got to take that road trip the friends promised her only Chandler and Monica went instead!

Phoebe got shafted out of two trips twice! Remember the storyline while she was pregnant in real life so she was unable to fly out to London for Toss' wedding; but when they got back after putting up with the insensitive behavior from Toss, Joey, Chandler, Rachel and Monica for too long; Monica, Joey and Chandler constantly talking about how great London was right in front of her and making her feel left out, Toss worrying about Emily's whereabouts and Rachel fretting about whether or not she'll have to leave the whole group to appease Toss' new marriage so much that she lets slip she thought Phoebe would be the first to leave. It's probably not in the right order, but that's neither hear nor there the important thing is it happened. They then promised Phoebe that the six of them were going to take a road trip down to Atlantic City! They promised her the vacation after they returned as an apology for their behavior after they returned when they just kept talking about London right in front of her making her left out and pissing her off with their insensitivity; but then her water broke and I know she couldn't travel to Atlantic City with her water broken because the babies were coming in a hurry; but here's the thing:
After the birth and when the babies were safely in Frank Jr and Alice's custody; they still didn't take her to Atlantic City; instead Monica and Chandler went alone to test their new relationship and to hell with Phoebe! Curse you both Monica and Chandler! Instead of the whole group taking Phoebe to Atlantic City after the babies were born like they'd originally planned, just Monica and Chandler went in the episode Kips, long after the babies arrived and Phoebe was somewhat back to normal.