Interesting comment regarding contributions from Annual Meeting at a KH :
I just got done collecting my congregations donations. Literally $15. The elders had earlier decided to combine the WWW and the local congregation boxes into one. If they hadn't, the amount to send to the branch for this wonderful program would have been $0.00 as all of the $15 was in the local congregation box. Hilarious.
https://www.reddit.com/r/exjw/comments/74rger/annual_meeting_2017_megathread/do1loi1/
Also - despite the OP letter it seems that, although the above BoE followed guidance on 'combining' the contribution boxes - they DID NOT place temporary 'Worldwide Work' labels over the 'Local Congregation' labels.
Also, if the congregation contributes $150 each month to the KH Operating Committe (for KH expenses and utilities) - that works out at around $15-per-meeting EXPENSES anyway that could be subtracted from the contributions before sending to WT....
October 2, 2017 - Re: Contributions Received at the 2017 Annual Meeting
• Please place temporary labels on the contribution boxes so that all boxes are clearly labeled “Worldwide Work.”
• The elders may estimate expenses that were incurred during the use of the Kingdom Hall for the annual meeting and deduct the total from the contributions received. The expenses may include utilities and supplies, but not the purchase or rental of audio/video equipment.
• Please transfer the net contributions to the branch office using the jworg website. The amount should be submitted as a donation to the worldwide work.