Kathleen,
are you talking about "conditional permission to eat" vs. "unconditional permission to eat" or is that just typing ....
bottom line is i basically IGNORE "Sometimes" as far as my S days go and give myself "unconditional permission to eat" not exactly sure how that would be described in Intuitive eating terms, but for me S days are to
1. eat WHATEVER I want
2. eat WHENEVER I want
3. eat HOWEVER much I want
4. ENJOY it
#4 is the real key,
for me personally there is absolutely NO REASON to monitor or count calories on your S days it just ruins the WHOLE BEAUTY OF IT... who cares if you ate 5,000 calories on your S day, be honest if you are eating 5,000 calories a day ONLY on your S days, then GUESS WHAT, FIVE other days of the week YOU'RE NOT DOING THAT!
also, if you eat that much you will feel AWFUL, you might need to take a nap

that's ok, it may take a few more times of OVERINDULGING to that degree to connect your mind and your body that HEY THAT DOESN"T FEEL GOOD and certainly I don't ENJOY it,
so you have to have patience with your mind/body connection and give it a chance to revivify. DON'T use EXTERNALLY LIMITING your S days with I have to stick with three meals and just have one snack or I can only have this many calories or (sorry reinhard on this one) I can only snack, have sweets or seconds SOMETIMES on S days ...
go to friggin town and
use one standard of measurment alone ...
ARE YOU ENJOYING IT?
let's face it, eating mounds of food is simply not ENJOYABLE, physically it makes you feel ill and spiritually and emotionally, when you look at it your inner conscience kicks in and you rightly feel self consciousness and/or shame ....
I have definitely overeaten on my S days, I have really blown some out,
I also have not used that as an excuse to not pick up with my N days on Mondays.
GO FOR IT on your S days, lets' be honest if your mind/body connection is really out of whack and you have deprived yourself of Von's Birthday Cake, donuts or peanut clusters for much of your life YOU'RE GOING TO OVER DO IT, plan it, count on it, throw a party in an anticipation and LOOK FORWARD TO IT ... VOW That if you eat five bags of peanut clusters you will ENJOY every last one of them AND YOU WILL go back to green on Monday NO MATTER WHAT ... will you gain some weight inititally? probably, will it piss you off? surely it will, will you feel discouraged and bummed out? probably you will, but guess what ...
you will start to INTERNALLY CONNECT the numbers going up or down on the scale NOT WITH CALORIES or other EXTERNALLY IMPOSED LIMITATIONS but with HOW YOU FEEL, YOU WILL LEARN TO REGISTER how much is too much, and HOW MUCH do you really need to ENJOY and WHAT do you NEED to enjoy,
one of the things i love about S days is the complete lack of eating structure, 3 meals goes out the window, good bye ... SEE YOU ON MONDAY ... let every weekend be a party that you throw to celebrate this newfound freedom and opportunity to expereince what and how much TRULY satisfies YOU!
BUT, NO MATTER WHAT, the party is over on Monday ... keep those N Days green and have a party every weekend and every single NWS day, you will be surprised how this creates an INTERNAL shift ...
maybe it won't happen quickly, maybe it will happen in seven months, maybe it will click immediately and three months down the road you wake up one Saturday and become the COOKIE MONSTER with a bottomless pit of desire in your tummy,
life is not a horizontal line, ride the roller coaster and ENJOY the curves ....
boy I am getting long winded on these, Kathleen you apparently tappped into some things I feel passionate about
GOD LOVE MY HUSBAND, my No S "Coach", this is is truly his S day mantra for me ...
THAT'S WHAT S DAYS ARE FOR ...
Blueskighs