the plan below and help with the questions?
On Apr 15 I will Drive to GC east entrance. Stop at desert view and if tickets are available do the desert view watchtower. Then continue driving and stop at lipan, Moran and Grandview points. Then drive down to Hopi house I am expecting this whole trip from arrival to visiting all these places to take about 2.5 hours. So if I complete lunch around 2:00 pm, I should be done with all these by max 5:00 pm. Can someone tell me where I would go for sunset? I am hearing some commentary that parking lots become full. Where should I park and watch sunset? Also do I plan the geology center and visitor center on same day next day since I won't have time for them in 15th?
Your itinerary for April 15 along the East Rim (Desert View, Lipan, Moran, Grandview, and Hopi House) is very doable in 2.5–3 hours if you keep the stops brief and focus on viewpoints rather than long hikes. Since you will finish around 5:00 pm, sunset at the Grand Canyon in mid-April is usually around 6:50–7:00 pm, giving you about 1.5–2 hours before sunset to find a good spot.
For sunset viewing, consider the following:
Tips for sunset:
Regarding the Geology Center and Visitor Center: yes, it makes sense to visit them the following day since your 15th is focused on the East Rim drive. Both centers are close to the Grand Canyon Village area, so you can combine them with a few shorter rim hikes or other viewpoints that are near the village. This will allow you to explore educational displays without feeling rushed.