Traveling with twins!?

We have an upcoming trip to Tahoe on August 7-10th. We have a wedding the morning of the 8th in South Lake Tahoe and a wedding the afternoon of the 9th at Silver Lake. *sigh* To accomodate this, we are staying half way between the two locations at Kirkwood. We are also driving my grandmother (Nanny) up with us...so, we will have myself, Jason, the twins and Nanny in the Navi plus a rack thing that hooks to the tow hitch with all our luggage and stuff in it...which brings me to my next point. Do you have any IDEA how much sh** we have to haul up there with us? I am sure the Quad Moms (Steece's, Goerlich's, Gerwer's & McNulty's) all are rolling their eyes at me right now-- and rightfully so. They have double the amount of my double! AHHH! :O

Regardless, its still a lot. So far my list consists of:
2 Pack n Play cribs
1 Bumbo & 1 Bebe Pod seat (these are gonna be our travel highchairs)
1 double stroller
2 dresses for the weddings
Play clothes, PJ's, etc.
Diapers (at 10-14 per day times 3 days that's about 30-40 diapers...AHH!)
Formula (at 48 oz per day times 3 days)
Bottles (8 per day)
Baby food (I make my own so this is another challenge in itself- read below)
Toys & books
Wipes
Blankets, burp rags, Pack n Play sheets
Womb sounds bear and CD player for bedtime

Then add in my bridesmaid dress, Nanny's suitcase, our suitcase and...well, you get the idea.

Fortunately, Jason bought a cargo carrier similar to this:

Ours is metal though so no worry about the exhaust melting the plastic container which we have read can happen with containers like this.

Why on earth would we need this when we have a big SUV, you ask? Here's why! Anyone with a Navigator will tell you: gorgeous truck, wonderful ride...middle seats are great...but not with twins. We didn't think of this when I fell in love with the bells and whistles and "had to have it"...Our middle row seating is two captains seats with a large center console.

When you put two car seats in that, you can't just climb into the third row seating. SO...one of us will have to be climbing thru the liftgate in the back to get to a seat. AND, at that, there will only be one seat up since we will have to keep the other two down for more storage space. *sigh again*

Now, once we get there, we have a one bedroom place to stay that has a sofa sleeper in the living room and a kitchen. The girls will be in the bedroom with us in both Pack n Plays. AND, we have to take all their food. My first thought was just to buy baby food for the trip and take it. But knowing our luck, we would do that, get there and they would refuse to eat it. So, I am trying to stay as much as possible on the normal routine. I am taking a small cooler with all their veggies, fruits, etc. Add to that baby cereals, crackers, puff snacks and we have another set of items to pack-- not to mention prepare, cook, label, freeze...

Lastly, we have a 3 hour drive to get there because we can't go like we would normally go to Tahoe because Kirkwood is out of the way. We are thinking of taking off earlier on the 7th and just doing the 2 hours to Tahoe and playing on the beach, etc and then taking off and going into Kirkwood-- sort of breaking the trip up a little and getting more "free" time out of the weekend.

If anyone has tips for traveling with infants and twins, please pass 'em my way! And, wish us luck as we prepare for our 1st family trip!