I have previously contacted Meraki Technical Support to confirm the recognition of the RMA.
The aforementioned is a summary of that conversation.
Unfortunately, I don't know of any tools to check the warranty period (Not the license period).
The standard RMA seems to ship a replacement unit within one business day in the best case.
In the Japanese distributor's information, I also saw a description of next-business-day shipping.
By comparison, the "Cisco Meraki RMA Only Service" offers a choice of service levels for shipping time and on-site support.
Returns (RMAs), Warranties and End-of-Life Information - Cisco Meraki
https://documentation.meraki.com/General_Administration/Other_Topics/Returns_(RMAs)%2C_Warranties_an...
> To request a Return Materials Authorization (RMA), please call Cisco Meraki technical support. Unless you have purchased Meraki Now, advance replacement orders will ship within 1 business day on a best case effort basis.
Note: Meraki Now = Cisco Meraki RMA Only Service
Cisco Meraki RMA Only Service
https://www.cisco.com/c/dam/en_us/about/doing_business/legal/service_descriptions/docs/meraki-rma-on...
[Japanese article]
iDATEN(韋駄天)| Cisco Meraki 保守サービスの種類
https://www.idaten.ne.jp/portal/page/out/mss/cisco/mainte/meraki.html