Irishman, if you don't wish to do all the "shewering" that 5 lbs may take, one of the larger grilling pans/trays with holes works ideal for shrimp and anyother meat normally skewered (I have one that is a basket shape). For shrimp with veggies, grill the veggies (peppers, onions) first and then add the shrimp along with pineapple. When I'm doing pork or chicken I reverse it and cook meat first then add the viggies (sqush and tomatoes should go in late).Grilled Shrimp - Some people think they have to do something hard as Chinese arithmetic to make grilled shrimp. You can do something as simple as sprinkle them hard with some Cajun or Caribbean jerk spice then put them on bamboo skewers that have been soaked in water. You can do something tricky like using lemon grass for skewers but threading shrimp on lemon grass is more of a chore (I have done it and that is why I gave fair warning) but the end results is pretty dramatic. You can also soak those bamboo skewers in fruit juice like apple or pineapple. Load up a spray bottle with that same juice to spray both the ribs and the shrimp as they grill. Give everything one last spray as they come off the grill.
Deserts - Pineapple goes so well with pork and shrimp that it would almost be criminal not to have some kind of pineapple desert.
Another thing I do with pineapple is simply grill the slices and serve with meat or shrimp. People go nuts over grilled fruite.