Where smoking jackets are worn

• Out of the rain
• Not alfresco, and what this puzzle is vis-à-vis its border answers
• Not alfresco
• Like games in the dome
• Suffering from cabin fever, say
• Out of the elements
• John Mayer "Pull all the shades and wander the great ___"
• Where it never rains

Wiktionary Word definitions in Wiktionary
adv. In or into a building.

Wikipedia Word definitions in Wikipedia