We also use the same TP in the 5'er that we use in the house. We also use DAWN dish detergent both at home and in the 5'er. We purchased a decent, but not expensive sets of SS pots and pans that STAY in the 5'er. I also have a crock pot that stays in the RV and is used a lot! I have a knife rack (I detest dull knives) that stays in t here as well as a set of steak knives, a set of melamine dishes that I purchased at a yard sale for $5. We have white sheets, towels, wash cloths, etc. that are for 5'er only. They can be bleached and are as good as new. We use colored ones in the house so we can differentiate.
I have a small poster that I made, framed and mounted in the bathroom that says, "PLEASE USE LOTS OF WATER AND A SMALL BIT OF PAPER". This is a reminder for us, our DDs and any guests we have.
We leave most of our stuff in the 5'er all during the season. We have "camping clothes" that have seen their best days years ago, but are still wearable. We will bring them in, wash, dry and back into the bin to be placed back into the 5'er. The 5'er sits beside the house, so whenever someone goes out, they take it and place it inside. I will usually put into the appropriate drawers/wardrobe when I go out for some "quiet time".
I will stock the pantry in the spring and that stuff stays in until it's used or when the season is over. The same goes with condiments such as ketchup, mayo, mustard, etc. Cheese and sandwich meat goes into the RV freezer and is defrosted when we head out again. Milk, eggs and bread get brought into the house to be used and is restocked when we head out again.
I also keep laundry detergent in the 5'er throughout the season along with shampoo, conditioner, toothpaste, toothbrushes.
When we get ready to go, I grab meat, milk, bread, eggs, meds and anything special we may need (beach stuff, dress clothes, etc.) and off we go. We can be ready in 30 minutes or less.
Yes, pay special attention at the PDI. I went along with one of our friends when they did their PDI and I videotaped everything that was said/shown so that when the time came to use the equipment, they could cue up the video and knew exactly what/how to do it. You don't want to do it yourself because you want to pay attention and not be worried about getting the video.