Possible Clues:

• On the blower, give delight
• Fill up of course, about to get the wind up
• Royal engineer's first treat
• Lavishly supply with drink? Right, for example, beer
• Majestic bearing to give delight
• Might one thus fill the boy up with beer?
• Supply copiously
• Feast concerning terrific wind
• Enough beer to fill Reginald up
• Generously entertain (with)