"Tá súil agam go bhfuil tú i mbarr na sláinte" means "I hope you're in the best of health"
"Scríobh chugam go luath" means "Write to me soon"
"cronaím uaim thú" means "I miss you"
Slainte means cheers to good health
Oh, dude, it's like "Slinte Mhath" is pronounced as "slan-jeva," but like, who even knows how to say that, right? It's like trying to pronounce a secret code or something. Just say it confidently and hope for the best, that's my motto!