Renting out Musjid property

Q: There is a padel court and restaurant built on a Masjid property. The Masjid collects rental income from the padel court and restaurant. Weekly posts on their Instagram page, have pictures or videos of men playing (satr exposed), and women at the restaurant (dressed like kuffaar, women drinking non alcoholic cocktail's from wine glasses). 

1. Is the income derived from renting the property to a sports facility (padel court, soccer, cricket, etc.) and restaurant permissible? 

2. Are restaurants income permissible as they allow men and women mixed on food tables? Will they be held accountable for the intermingling committed?

Q: A plot of land was made waqaf for a musjid in the 1970s, however no musjid was built on it because of the group areas act. In 1980 a musjid was constructed on another site. All these years the jamaat has been paying rates etc. for the first plot. There is no need to build a second musjid as the town is small and the current musjid suffices for the towns needs. We pose the following questions:

1. Can the land be let out temporarily?

2. Can the jamaat build houses on the land for income permanently?

3. How should the income be utilised?

4. Can the income of the waqf land be utilised for running the affairs of the current musjid?