Perhaps try something radical (for you) to shake it up. Your body is very smart and has learned to easily exist on you current diet/routine - maybe some cross training - the 5/2 diet - dont diet (i know it is a lifestyle and not a diet you are on at all, but the word fits) at all for a while - instead of walking try swimming - walk up and down hills instead of flat - ride a bike - try high protein. TRY anything - just dont give up :happy:

Just Ann will do - that name was taken when i joined - so was Ann1 and Ann2 and Ann12 - so i just plonked in a long number to get past that page lol

Just adding my 2 cents I'm a Jenny Craig Client, no I don't do every meal on Jenny, can't afford it and not practical all the time but I do have consultations weekly since it is provided. I too have had a problem where the scale just doesn't move but on the other hand I have lost some inches and have taken things up in the waist and can wear a Large top instead of XL. But the butt has not changed other than firmed and lifted some, pants may have some extra room just under the buttock area but fit snugly across the rear. Have you measured to see if maybe this is your case also? My consultant constantly lets me know that if I take in below a certain calorie level I'm not going to loose because the body will say hey, you are trying to starve me so I'm dropping the metabolism even more. I am just not burning the calories up. The inches lost is due to building muscles or firming up.

Sorry guys, much as I'd love to believe it's possible to be eating too little, there's tons of research that shows that while, yes, the body will adjust its metabolism to conserve fuel and burn more efficiently, it is not NEARLY a big enough change to make the kind of difference that would cause you to gain weight if you are eating at a deficit. Please go check out the "Eat, Train, Progress" group here - the two people who manage that group are super knowledgable and will help you out if you ask their advice, but be prepared for some tough love. If you don't want to go that route, I would at least recommend going to this link:
http://www.myfitnesspal.com/topics/show/833026-important-posts-to-read
Read up on things there. Towards the bottom there is a link about "starvation mode". It's all very interesting and there are links to scientific research so it's not just somebody's opinion.
Usually, the key is to be very very rigorous in your logging and to weigh or at least measure EVERYTHING. The most likely reason to not be loosing anything is that you are eating more than you think you are, or that you are not burning nearly as many calories as you think you are. MFP is well known to over estimate calorie burn for almost everything.
I think of it this way, I didn't get to where I am by being _good_ about estimating what I should be eating, so for at least a little while I need to retrain myself by being super aware of what and exactly how much I'm eating. Maybe someday I'll have retrained myself well enough that I can go back to just sort of estimating, but for now, at least, I know that I'm not good at it so I have to weigh and measure.

I did look at your diary a bit, but it's hard to see any patterns with your vacation. I couldn't really look at it too in depth, but did some spot checking and did notice that sometimes you are pretty high on sodium. It's just possible that you're retaining water from that. Also, if you've changed your exercise routine and are now exercising a LOT more than you used to be, it is likely that your body is retaining a bit of water while it heals sore muscles. That will drop away once your body is used to the new routine.
Good luck!
Ruth