The Grand palace is a huge area and walking to see any of it is required. Perhaps you could see if wheel chairs are available, although pushing one in the heat might be an issue. As mentioned by others, the Reclining Budda might be a better option. We walked to the river from the exit and I believe it took about 10 minutes for us, we are in our 60's.

you can go by yourself, buy the ticket once you are there. with ticket they provide you information pamphlets which you can read and continue your tour based on that information. need to go before 2 pm as you need at least 2 to 3 hours if you want to see all

We went there on a Thursday it was not that crowded, and I think its better to go there on a weekday. Probably Monday to Thursday.

Sinceramente non ho visto differenze prezzi... comunque controlla bene il biglietto perché dovresti avere anche l’accesso ad uno spettacolo, ma li nessuno ti dice niente...

Hallo Zwischen 1-3 Stunden würde ich einrechnen. Und gleich frühmorgens bei Öffnung dort sein. Viel Spass

Yes it is, wear a mask if you want extra protection

I am not sure, but please try to buy all the tickets locally, as in 99% cases they would be much cheaper than online booked ones.

Supports the upkeep of the palace

scusa il ritardo. I biglietti si possono comprare direttamente al sito

No need to buy online, it took us maximally 5 minutes to get the tickets, went around midday.