If you'd rather swap La Azotea + Caoba Farms for a full day out of town, any of these work well on a Saturday. Evening plans (Aqua Antigua → Frida) still hold in every scenario.
🌊 Lake Atitlán (full day)
Guatemala's most stunning lake, ringed by three volcanoes and a dozen Mayan villages. The drive from Antigua is ~2.5 hours each way, so an early start (6:30–7:00 AM) is essential. Most guided day trips stop in Panajachel, then boat to San Juan La Laguna (murals, traditional weaving, cacao workshops) and San Pedro La Laguna (coffee culture, lake views). You'll be back in Antigua by 5:00–6:00 PM. A private tour gives you more flexibility; shared shuttles are cheaper but on a fixed schedule.
🏛️ Iximché Mayan Ruins (~1 hr each way)
A Pre-Columbian Kaqchikel Maya capital near Tecpán — pyramid temples, ceremonial plazas, a ball court, and active Maya altars still used for ceremonies today. Far less touristed than Tikal, and close enough for a relaxed half-day trip. Open daily 8 AM–4 PM, entry ~Q50. Pair it with lunch in Tecpán (try pepián at one of the roadside comedores — it's a specialty of this region) and the scenic highland drive is gorgeous. You'd be back in Antigua by early afternoon with time to spare for Aqua Antigua.
🚴 OTO Sip n' Cycle — coffee by bike (half day)
Since you're already booked with Old Town Outfitters for Pacaya, this is an easy add. Two versions: the Finca Azotea ride (beginner, 4 hrs, ~$60) bikes from the OTO shop through the countryside to La Azotea coffee farm — you get the coffee tour and the ride. Or the De La Gente ride (beginner–intermediate, 9 AM–2 PM, ~$124) visits a small family coffee co-op on the flanks of Volcán de Agua — you tour their field, watch them roast beans at home, and share lunch with the family. Both leave from the OTO shop. E-bike upgrade available.
🥾 OTO Valley Ride or Antigua Valley Hike (half day)
Valley Ride (beginner bike, 4 hrs, ~$52): a 28 km loop through the Almolonga Valley — past Ciudad Vieja ruins, the Valhalla macadamia farm, and the weaving village of San Antonio Aguas Calientes, with three volcanoes as your backdrop. Runs 9 AM or 1 PM.
Antigua Valley day hike (moderate, full day): guided ridgeline hike through coffee fincas and mountain villages with panoramic views of Agua, Fuego, and Acatenango. Multiple route options from half-day to full-day. Ask OTO what fits your energy level after Pacaya.
☕ Other coffee tour options (no bike required): Finca La Azotea runs its own walk-in coffee tour + chocolate workshop (the current Day 4 default). You can also book a
standalone coffee tour through GetYourGuide — several visit small highland farms with cupping sessions and roasting demos.
Café Café also runs farm tours from their shop.