They can if they chose but since Jehovah's Witnesses do not celebrate their birthdays it most would decline.
If the luncheon is being given to make the Jehovah's Witness happy it would no doubt be more respectful to take the above into account and chose another moment to arrange a meal.
"Teacher's Luncheon" means that only one teacher could attend. "Teachers' Luncheon" denotes the plural form, i.e. a luncheon for many teachers.
It would be unwise to decline an invitation to attend a luncheon with the Queen. In America, plain old baloney is sometimes labelled as luncheon meat. Will you join me for a pleasant luncheon?
If you have a printable invitation, you can send it out. You can also use verbal invitation like "Please I have a luncheon coming up this weekend, and would like you to attend".
There is no specific church that former Witnesses attend.
There are two subjects here, and so the verb is plural: invite.
Jehovah's Witnesses attend congregation meetings on one day during the week (decided by that congregation) and on Sundays.
They are issued SUBPOEANAS to attend. (pronounced: Sub-Peenah)
If they view it as a Christmas party then no, as Christmas is not celebrated. But many Witnesses do attend by viewing it instead as an end of year party.
No, it is not common or appropriate to pay people to attend your birthday party. Guests are typically invited to celebrate with you out of friendship or goodwill, not for financial compensation.
They don't "have to attend Sunday meetings." However, most Witnesses understand Hebrews 10:24,25 as strongly encouraging them to meet together regularly. Besides, not all Witnesses meet on Sunday; some, like me, attend on Saturday instead, especially when four or five congregations meet at the same location, and thus cannot all meet on Sunday.
That would depend on some factors. For example: If the x-JW was disfellowshipped, perhaps engaging in pre-marital sex with the person that now they are about to wed; the Witness family would not attend. It would be like pretending that their mode of living was being approved of.
Yes they are allowed. Most Jehovah's Witnesses (JW's) will follow recommendations to attend the hall closest to them for convenience sake but individuals are free to follow directives or not.