Hey, I've done small research and sharing here, when the halving is about to happen and what parties are being organised:
April 3-5 🇸🇻 🌋 San Salvador, Salvador Bitcoin Halving Party https://bitcoinhalvingparty.com/
April 11-14 🇺🇸 🤠 Dallas, Texas USA BitBlockBoom https://bitblockboom.com/bbb/
April 12-13 🇬🇧 🌽 Bedford CheatCode Conference https://www.cheatcode.co.uk/
April 13-14 🇬🇷 🌊 Santorini, Greece Santorini Halving Party https://loveisbitcoin.com/halvingparty/
April 19-21 🇵🇱 🐇 Warsaw, Poland European Halving Party + Bitcoin FilmFest'24 https://europeanhalvingparty.com
April 20-21 🇫🇷 🏰 Bretagne, France Halving Party - Citadelle
April 22 🇺🇸 🌴 Miami, Florida USA Bitcoin Energy Summit https://www.eventbrite.com/e/bitcoin-energy-summit-2024-tickets-724317261427
April 27-28 🇺🇸 🚣 Lake Perris, California USA Halving Party 2024 https://btcpins.com/halving-2024/