We went a little later in March, but the fall weather is great. It was a little windy and cool in the mornings, but still wet wadeable (but bring waders just in case).
Lock up your valuables (like rings and watches, passports) in the hotel safe while in Buenos Aires (our concierge recommended this to us) and keep a photo of your passports on your phone.
Be prepared for a small riverside feast at lunch, including wine…the food and wine is outstanding…and the brown trout are big…you’re gonna have a blast! Don’t overlook fishing a mouse…not many fish them there, but after telling my guide I was heading to AK in a few months, he had tied up a few and I fished one on the last day I was there…produced the largest brown of the trip at 25”, and a kingfisher (I have the bird strike and fly away on video that my wife took sitting in the raft behind me)…