We arrive in Orlando at around 10 am and are staying at Coronado springs. Our plan was to enjoy Disney springs and the hotel for the day and head to animal kingdom on the day of departure. We are taking a 11 pm flight back home. But now my mom is suggesting we go Animal kingdom on day of Arrival since we plan on getting a
lightning lane pass. We mainly want the safari and avatar. What do you think any suggestions? It’s just two adults traveling.
Sounds like you will get more park time if you do it on the last day.
If you want to get the feeling of AK on your first (or last) day, another option would be to have dinner or other meal at AKL, then spend some time walking around the hotel. The only challenge is the transportation. Via bus, you have to go through DS or a park to get back to Coronado. Paying for transportation is usually easier/faster.
If you are just going to AK on 2nd half of the day on arrival day, and only AK that day, then I personally wouldn't buy LLMP. Late(r) in the day, you probably can get on FoP, and most rides, with a fairly short wait. AK waits drop off as the day progresses. POSTED waits might still be high, but actual waits are almost sure to be much lower than what is posted.
When I go to AK, I sometimes get LLMP, but I almost always pair it with park hopping in the PM to get my money's worth. Mostly, it isn't really needed for AK, except maybe Easter week.
That said, you know you better than I do. On your last morning, you will also need to pack, be out of the room by 11am. That can be tricky if you are pairing that with AK, which opens at 7:30 for onsite guests. Breakfast at most WDW hotels doesn't start until 7am. Starbucks in the park gets fairly long lines.
Much depends on your preferences.