I think Taylor Creek still has the grills actually on the stands, they're crap but they work I guess. I can't solidly remember seeing any in other parks. TC is a touch far, but is a lovely ride up the Don paved path to get there...

Between 3 bikes charcoal+small grill+foods can be achieved without a trailer and without serious weightage on any one person - it can be done! Propane/Butane bottles on the other hand are a different story Would love to do this, pick a park/locale and ride there to burn some flesh and ride back... mmhmm.