Fortunately, our 210WBS has a storage bay for the grill... Just the right size for my Weber Q120 grill. As for cleaning, I shut it off when done and after eating, I wipe it down (the grill part) with a paper towel, fire it back up on "high" for about 5 minutes to burn the remainder off and call it a day. Done until the next time I use it and at that time, I'll take a brush to the grill to knock of any of the char that might be there. The Weber Q series have a grease pan and I discard that as needed. No special "cleaning" required between seasons of use...
My 2 cents, your mileage may vary...
2 Cats; J-Lo and Ragamuffin :R
2014 Thor Tuscany 40RX DP
2011 Ram 2500 Longhorn CTD HO
2011 Keystone Cougar 318SAB (now gone)
2008 FunFinder X 210WBS (Sadly gone)