Ok. I know that this is going to be a flame worthy post so I'm getting out my misting fan now.
First let me say that it sounds like this guy is a real jerk. Sneaking around and lying are NEVER ok no matter the situation.
But there are situations where I can see stepchildren not being included in a vacation. I have 2 step-daughters, ages 13 and 15, and 3 sons with my DH, 7,6,and 2. The boys and I have been to WDW with DH 2 times without my stepdaughters. Would I have liked to have taken the girls? Absolutely, and they ARE going with us in September, but only after their mother made it possible for us.
In the past, the girls did 4H projects with their father in another county from where we live. This was kind of 'their thing' together and culminated in a week long camping trip with just the 3 of them every summer. The boys were just too young to be able to go for the entire time and wouldn't have enjoyed it as much as the girls loved having daddy to themselves anyway. Because we live approximately 2 hours away, DH and the girls would rent a camper and stay at the fair for the entire week costing about $2500 by the time it was all over. Once summer was over, they were back at the mother's place again.
This was their vacation with our side of the family each year. They also would go on vacation with their mother and stepfather over the week of spring break, including once to WDW and another trip to Universal Studios, so they were able to go to other places, too.
Every 2 years we are able to take the boys to WDW if we go during Value Season and stick to a budget. The last time we went in February, 2007 and DH's ex decided that she was going to make this the next arguing point. How could he? etc,etc. Well, once he explained that she would never allow us to take the girls out of school, including for the wedding of my father who the girls consider their grandfather, that the girls DO go on vacation with him every summer, and we only go every two years because we just can't afford to go every year, she wanted to argue that none of that was true. It was all HIS fault.
There is absolutely no doubt in my mind that she tells everyone she knows that we take family vacations to WDW without the girls but leaves the rest of the story out.
Luckily, her ranting proved positive to us. DH called her bluff and told her that if she would allow the girls to do 4H in our county and let us take them out of school, we would love to have them go with us. She fussed about it quite a bit before she agreed, and actually tried to get out of the agreement at the last minute about signing the release to let them do the fair here last summer.
We now have plans for all 7 of us to go to WDW at the end of Sept (think
free dining!), and I can not wait to be able to do some really cool things with them. The oldest girl will turn 16 while we are there, so we are booking a Segway tour for just her and DH as well as some other special things. I have purchased
trip insurance, just in case ex decides to try to pull something at the last minute. I know that the girls missed staying at the fair last summer in order that we could afford to go, but we are all having fun getting ready for this trip.
Please be aware when judging someone's situation, make sure you aren't getting half the story (and that half isn't coming from someone that may have an ax to grind!).