Back in 1961, when "Headquarter's" brought out the green NWT Bible, we in Southern California had to drive all day to get to San Francisco. The convention was held outside at Candle Stick Park , an outdoor stadium, right next to the ocean. When the wind came up off of the water, we all froze. When there was no wind, we baked under the sun. Everyone was "encouraged to" (told) to book our stay through the Society's Rooming Dept. and stay in worldly people's homes for a "witness". It was more like, it is San Francisco summertime, rooms are already booked for tourists, so where do we stick the JW's? Where our family was allotted was a clean, friendly, gracious immigrant's, old tiny house. There was 5 of them and 5 of us. They had a twin bed for my sister and me. She got the mattress. I got the box spring. The toilet was in a little closet all by it's self. The bathtub room was down the hall. To take a bath and wash my hair, I got up extra early to get the tub. As I was swishing my hair underwater like a mermaid with my eyes closed, I sit up to see, 3 little Chinese children, staring at me. We "experienced" staying at a private residence only that once.
In reference to the OP, I think they are, like doinmypart says, trying to build excitement. The sensationalism of seeing and hearing thousands of WT drones clapclapclapclapclapclap ... clapping , invigorates (or wakes up) large crowds.
If your usual DC is only 20,000, visually to "now" see 60,000 is like, WOW! We are growing! lol
If at your usual DC 10 (ten) people get baptized, now you "see" 30 (thirty) get dunked, in sheeples mind it could be "Wow! This is evidence Jah's Organization is growing. Like... Wow". lol
Large CON-vention are the same, smoke and mirrors.
Oh Sheeples out there. Please wake up.
LoisLane