Wow, I'm not alone!

I just posted a semi-rant on the Doing the Happy Dance board, but I guess I should have posted it here instead.
To make a long story short, I've been crazy about WDW since we went for the first time, in May 2009. Since then, my DGF and I have been there December 2009, August 2010 and December 2011 (this time with my parents and sister for their first visit). Our last trip wasn't very very relaxing, and I came back more tired than anything. It was fun to show WDW to my family, but spending a whole week with my parents was a bit hard on everyone. They don't speak much English, so they relied on us a lot, and we spent the week translating everything. They also whined about stuff, tired easily especially as the week went on, and by the end of the week, I was just happy to leave WDW and get back home.
I have one week's vacation left to take before May (I had it extented a couple of weeks). My DGF wanted us to go spend that week at her parents. Since we already spent a week there over the Holidays, I said I'd pass and would try to make a solo trip to WDW fit in my budget. I know she's tired of WDW, so she won't be missing out. Well, she's been trying to make me feel guilty about not wanting to spend a week with her and her parents! We've been together 10 years, and it's only my second solo trip; the only other one was during the first year we were together, and it had been planned since before we'd met. Am I a selfish monster to want to spend one week alone, out of a 10 year relationship? I don't think so.
Anyway, I finaly booked my trip eaely this morning (Expedia was showing only 1 airfare ticket at the price I could pay, for the dates I wanted), and haven't told her yet. Right now, I'm not excited about this trip, because all I think about is how for the next two months, she'll use every possible occasion to make me feel guilty.
Has anyone had this kind of experience with their husbands / wives / partners? I seem to only read about positive experiences, so I'm starting to wonder if I went about this the wrong way.
Once the dust settles down, I need to check out what I want to do. It's definitely a budget trip, so no fancy restaurants for me, no alcohol, no expensive extra activities. I would like to do the Behind the Seeds tour (DGF wasn't interested), and would like to re-do some rides I haven't done since our first or second trips (Carousel of Progress, Monsters inc, Indiana Jones, see all the countries' movies in Epcot). Any other suggestions?
I'll also try to take some time off. I'm a contemplative person: I can sit for an hour and just smell the Disney popcorn, listen to the music, watch the people go by. I'tll be nice to not always have to be on the move. I'm going to be there 6 days, so plenty of time to do nothing if I want to!
Thanks for letting me share!